GSFC X-673-64-1F
ENGINEERING DRAWING
STANDARDS MANUAL
S AND SPA
C
I
C
UT
E
NAL
O
TI
N
U. S. A.
INISTRA
TIO
AERO
N
M
AD
A
August 1994
NA
X-673-64-1F
Supersedes GSFC X-673-64-1E/July 1991
ENGINEERING DRAWING
STANDARDS MANUAL
Mechanical Engineering Branch
Goddard Space Flight Center
Greenbelt, Maryland
AND SPA
ICS
C
T
U
E
ON
TI
INISTRA
TIO
AL AERON
M
AD
A
August 1994
N
U. S. A.
NA
National Aeronautics and
Space Administration
Goddard Space Flight Center
Greenbelt, Maryland 20771
1994
DESCRIPTION OF REVISION
T h i s r e v i s i o n , w h i c h s u p e r s e d e s t h e G o d d ar d S p a c e F l i g h t C e n t e r ( G S F C ) S t a n d a r d
X - 6 7 3 - 6 4 - 1 E , E n g in e e r in g D r a win g S ta n d a r d s M a n u a l, is in te n d e d to u p d a te a n d r e f le c t
th e la te s t f o r ma ts a n d s ta n d a r d s a d o p te d b y G S F C.
T h e f o llo w in g is a s u mma r y o f th e p r in c ip a l c h a n g e s a n d imp r o v e me n ts in c o r p o r a te d in
this issue:
a.
A d d itio n o f Co mp o s ite Ma te r ia l D r a w in g d e f in itio n .
b . C h a n g in g o f t h e s i g n a t u r e t o a p r i n t e d n a me i n T i t l e b lo c k s .
c.
N e w e x a mp l e o f t h e M e t r i c D r a w i n g s f o r ma t a n d t o l e r a n c e p r e s e n t a t i o n .
d . I mp r o v e d p l a c e me n t o f v i e w s o n T y p e s o f D r a w i n g s s a mp l e s t o p r e v e n t u n n e c e s s a r y
r e w o r k o f d r a w in g s a t a la te r d a te .
e.
N e w E n g in e e r i n g O r d e r ( E O ) f o r ms a d d e d ; o ld E O f o r ms w i l l b e p h a s e d o u t.
f.
A d d itio n a l n o te s o n v a r io u s to p ic s a d d e d to N o te E x a mp le s s e c tio n .
g . D e le tio n o f mic r o f ilmin g r e q u ir e me n ts f o r d r a w in g f o r ma t.
h . F lo w c h a r t f o r f lig h t p r o j e c ts r e d e f in e d .
iii
iv
PREFACE
T h e G S F C E n g in e e r in g D r a win g S ta n d a r d s M a n u a l i s t h e o f f i c i a l s o u r c e f o r t h e
r e q u ir e me n ts a n d in te r p r e ta tio n s to b e u s e d in th e d e v e lo p me n t a n d p r e s e n ta tio n o f
e n g in e e r in g d r a w in g s a n d r e la te d d o c u me n ta tio n f o r th e G S F C.
T h e M e c h a n i c a l E n g i n e e r i n g B r a n c h , M e c h a n i c a l S y s t e ms D iv is io n , h a s b e e n d e le g a te d
t h e r e s p o n s i b i l i t y f o r i n t e r p r e t a t i o n , p e r i o d ic u p d a t e s , a n d d i s t r ib u t i o n o f t h e G S F C
E n g in e e r in g D r a win g S ta n d a r d s M a n u a l.
A ll E n g in e e r in g D ir e c to r a te d e s ig n o r g a n iz a tio n s a n d th e ir c o n tr a c to r s s h a ll a d h e r e to th e
r e q u ir e me n ts o f th is ma n u a l w h e n p r e p a r in g G S F C e n g in e e r in g d o c u me n ta tio n f o r f lig h t
h a r d w a r e a n d g r o u n d s u p p o r t s ys te ms .
Co mme n ts o r in q u ir ie s c o n c e r n in g th is ma n u a l s h o u ld b e d ir e c te d to th e Me c h a n ic a l
E n g in e e r in g Br a n c h , Co d e 7 2 2 .
D r . A lla n S h e r ma n
D ir e c to r o f E n g in e e r in g
v
vi
ENGINEERING DRAWING STANDARDS MANUAL
vii
TABLE OF CONTENTS
INTRODUCTION ....................................................................................................... 1
1. DRAWING ELEMENTS .......................................................................................... 3
1.1. Drawing Sizes ................................................................................................. 3
1.2. Multisheet Drawings ........................................................................................ 3
1.3. Zoning ............................................................................................................ 4
1 . 4 . T i t l e B l o c k an d R e v i s i o n B l o c k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1 . 5 . D r a w i n g F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
2. NOMENCLATURE ................................................................................................ 11
2.1. Drawing Title ................................................................................................. 11
2.2. Abbreviations ................................................................................................. 12
2.3. List of Material .............................................................................................. 14
2 . 3 . 1 . R e q u i r e me n t s o n t h e B o d y o f t h e D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
2 . 3 . 2 . R e q u i r e me n t s i n t h e L i s t o f M a t e r i a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
2.4. Notes on Drawings .......................................................................................... 15
2 . 4 . 1 . S e c u r i t y C l a s s i f i c at i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5
2.4.2. Note Location........................................................................................ 15
2 . 4 . 3 . N u mb e r i n g o f N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
2 . 4 . 4 . N o t e E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
2 . 4 . 4 . 1 . D i me n s i o n N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
2.4.4.2. Heat Treating Notes.................................................................... 17
2 . 4 . 4 . 3 . J o i n i n g Me t h o d N o t e s ( w e l d i n g , b r a z i n g , e t c . ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8
2.4.4.4. Plating and Coating Notes ........................................................... 18
2.4.4.5. Surface Preparation Notes ........................................................... 19
2.4.4.6. Testing and Inspection Notes ....................................................... 20
2.4.4.7. Threaded Inserts — Cleaning and Installation Notes ....................... 20
2.4.4.8. Miscellaneous Notes ................................................................... 21
2 . 4 . 4 . 9 . I n f o r ma t i o n a l N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
2.4.5. Local Character Notes ............................................................................ 23
2 . 4 . 6 . G e n e r a l D i me n s i o n a l T o l e r a n c e N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
2 . 5 . S p e c i f i c a t io n C a l l o u t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
3. DRAFTING PRACTICES ....................................................................................... 25
3.1. General .......................................................................................................... 25
3.2. Lines ............................................................................................................. 25
3.2.1. Ink Lines and Plotted Lines .................................................................... 25
3.2.2. Pencil Lines .......................................................................................... 27
3.2.3. Types of Lines....................................................................................... 27
3.2.3.1. Center Lines .............................................................................. 27
3 . 2 . 3 . 2 . D i me n s i o n L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8
3.2.3.3. Leaders ..................................................................................... 28
3.2.3.4. Break Lines ............................................................................... 28
3.2.3.5. Phantom Lines ........................................................................... 29
3.2.3.6. Sectioning Lines ........................................................................ 29
3.2.3.7. Extension Lines ......................................................................... 30
3.2.3.8. Hidden Lines ............................................................................. 30
3.2.3.9. Stitch Lines ............................................................................... 30
3.2.3.10. Outlines or Visible Lines........................................................... 30
3.2.3.11. Datum Lines ............................................................................ 30
3 . 2 . 3 . 1 2 . C u t t i n g - P l a n e / V ie w i n g - P l a n e L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0
3 . 3 . L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1
3.3.1. Style .................................................................................................... 31
3.3.2. Heights ................................................................................................. 32
3.4. Scale ............................................................................................................. 32
3.5. Positioning the Part on the Drawing .................................................................. 33
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5.
6.
7.
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ENGINEERING DRAWING STANDARDS MANUAL
3.5.1. Picturization ......................................................................................... 33
3.5.2. Sections ................................................................................................ 34
3.5.3. Views ................................................................................................... 36
3.5.4. Details.................................................................................................. 37
3 . 5 . 5 . I d e n t i f i c a t i o n o f S e ct i o n s , V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7
3 . 5 . 6 . L o c a t i n g S e c t i o n s, V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8
TYPES OF DRAWINGS ......................................................................................... 39
4.1. Altered or Selected Vendor Part Drawing .......................................................... 39
4 . 2 . A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0
4.3. Detail Drawing ............................................................................................... 41
4.4. Drawing Tree ................................................................................................. 42
4 . 5 . E l e c t r i c a l / E l e c tr o n i c D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3
4 . 5 . 1 . E l e c t r i c a l a n d E l e c t r o n i c S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3
4 . 5 . 2 . E l e c t r i c a l a n d E l e c t r o n i c D i a g r a ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3
4 . 6 . I n s e p a r a b l e A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4
4 . 7 . I n s t a l l a t i o n A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5
4.8. Interface Control Drawing ............................................................................... 46
4.9. Matched-Set Drawing ...................................................................................... 48
4 . 1 0 . M e c h a n i c a l S c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 9
4.11. Modification Drawing .................................................................................... 51
4.12. Outline Drawing ........................................................................................... 51
4.13. Source Control Drawing ................................................................................. 53
4 . 1 4 . S p e c i f i c a t i o n Co n t r o l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4
4.15. Standard Part Drawing ................................................................................... 56
4.16. Tabulated Drawing ........................................................................................ 56
4.17. Tooling Drawing ........................................................................................... 57
4 . 1 8 . C o mp o s i t e M a t e r i a l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
NUMBERING SYSTEM FOR DRAWINGS AND SUPPORTING DOCUMENTATION . 60
5 . 1 . P a r t N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1
5 . 2 . F i n d o r I t e m N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2
5.3. Order of Precedence of Specifications and Standards .......................................... 62
5.3.1. Group I ................................................................................................. 62
5.3.2. Group II ............................................................................................... 62
5.3.3. Group III .............................................................................................. 63
5.3.4. Group IV .............................................................................................. 63
5.3.5. Group V................................................................................................ 63
ENGINEERING ORDER ........................................................................................ 64
6 . 1 . G e n e r a l R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4
6 . 2 . F o r ma t S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4
DRAWING REVISIONS ......................................................................................... 68
7 . 1 . R e v i s i o n Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8
7.2. Revision Identification .................................................................................... 68
7.3. Revision of Multisheet Drawings ...................................................................... 68
7.4. Revision Recording ......................................................................................... 68
7.5. Redrawn or Replaced Drawings ........................................................................ 70
PARTS LIST AND INDEX LIST ............................................................................. 71
8.1. Definitions ..................................................................................................... 71
8 . 2 . R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1
8.2.1. List Preparation ..................................................................................... 71
8 . 2 . 2 . L i s t F o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
8.2.3. Revision Identification ........................................................................... 72
8 . 2 . 4 . D e l e t i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
8 . 2 . 5 . A d d i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
8.3. Cover Sheet.................................................................................................... 72
8 . 3 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
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8.3.2. Entries.................................................................................................. 72
8 . 4 . P a r t s L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5
8 . 4 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5
8.4.2. Entries.................................................................................................. 75
8 . 5 . I n d e x L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7
8 . 5 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7
8.5.2. Entries.................................................................................................. 77
8 . 6 . F i n d o r I t e m N u mb e r S ys t e m o f I d e n t i f i c a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9
8.6.1. Definition ............................................................................................. 79
8 . 6 . 2 . A p p l i c a t i o n a n d L i mi t a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9
8 . 6 . 3 . D r a w i n g R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 0
8.7. List of Material .............................................................................................. 81
8 . 7 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1
8.7.2. Entries.................................................................................................. 81
9. DOCUMENTATION MANAGEMENT ..................................................................... 82
9.1. Typical Drawing Flow for Flight Projects .......................................................... 82
9.2. Archiving....................................................................................................... 83
9 . 3 . C o mp u t e r - A i d e d D e s i g n D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3
9 . 3 . 1 . P r e s e n t a t i o n o f C o mp u t e r - G e n e r a t e d D a t a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3
9 . 3 . 2 . D e v e l o p i n g a n d U s i n g C o mp u t e r - G e n e r a t e d D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4
9.3.3. Specification Data ................................................................................. 84
1 0 . D E S I G N R E F E R E N C E S , S TA N D A R D S , A N D S P E C I F I C A T I O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5
1 0 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5
1 0 . 1 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g P r a c t i c e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5
1 0 . 1 . 2 . S t a t e me n t s o n D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5
1 0 . 2 . M e t r i c D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6
1 0 . 2 . 1 . S I U n i t s a n d S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6
10.2.2. Unit Conversions ................................................................................. 89
1 0 . 2 . 2 . 1 . C o n v e r s i o n o f D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9
10.2.2.2. Unit Rounding.......................................................................... 89
10.3. Design References ......................................................................................... 92
10.4. Control of Surface Roughness......................................................................... 93
10.4.1. Surface Texture ................................................................................... 93
1 0 . 4 . 2 . S u r f a c e T e x t u r e S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3
10.4.3. Surface Texture Standards..................................................................... 93
10.5. Thread Specifications .................................................................................... 93
10.6. Welding—Fusion and Resistance ..................................................................... 95
10.6.1. General ............................................................................................... 95
1 0 . 6 . 2 . B a s i c W e l d S y mb o l s a n d T h e i r L o c a t i o n S i g n i f i c a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5
10.7. Outgassing of Spacecraft Materials ................................................................. 95
10.8. Standards and Specifications Index ................................................................. 96
10.8.1. National Bureau of Standards ................................................................ 96
10.8.2. Federal ............................................................................................... 96
10.8.3. Industrial ............................................................................................ 97
10.8.4. Military .............................................................................................. 98
10.8.5. NASA ............................................................................................... 100
1 0 . 9 . S t a n d a r d s a n d S p e c i f i c at i o n s N u me r i c a l I n d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 1
A P P E N D I X A . D E S I G N R EV I E W D O s A N D D O N ' T s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 7
INDEX.................................................................................................................... 110
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x
X-673-64-1F
ENGINEERING DRAWING STANDARDS MANUAL
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
1
INTRODUCTION
T h is d r a w in g s ta n d a r d s ma n u a l e s ta b lis h e s th e c o n v e n tio n s to b e a d h e r e d to b y
e n g in e e r in g a n d d r a f tin g p e r s o n n e l in th e p r e p a r a tio n , r e v is io n , a n d c o mp le tio n o f
e n g i n e e r i n g d r a w i n g s . T h i s ma n u a l s e t s f o r t h t h e min i mu m r e q u i r e me n t s a c c e p t a b l e a t
G S F C f o r th e p r e p a r a tio n o f e n g in e e r in g d r a w in g s f o r f lig h t h a r d w a r e a n d g r o u n d
s u p p o r t s ys te ms . T h e r e q u ir e me n ts s p e c if ie d h e r e in a r e e s s e n tia l to th e s ta n d a r d iz a tio n
o f p r a c tic e s a n d to a u n if o r m in te r p r e ta tio n o f d r a w in g s .
A s ys te m, p a ylo a d , o r c o mp o n e n t a s s e mb ly s h a ll b e c o mp le te ly d e f in e d b y me a n s o f
d r a w in g s , in c lu d in g lis ts , s c h e ma tic s , w ir in g d ia g r a ms , a n d s p e c if ic a tio n s , to e n s u r e th a t
c o mp o n e n t s f a b r i c a t e d a r e i n a c c o r d a n c e w i t h t h e d e s i g n . T h e d o c u me n t a t i o n
i n f o r ma t i o n s h a l l s e r v e a s a p e r ma n e n t r e c o r d .
F l i g h t h a r d w a r e s h a l l b e f a b r i c a t e d i n a c c o r d a n c e w i t h t h e a p p r o v e d d e s i g n d o c u me n t s .
T h e s e d o c u me n t s s h a l l r e f l e c t t h e c h a r a c t e r i s t i c s a n d a c c e p t a n c e c r i t e r i a f o r a l l
ma t e r i a l s , c o mp o n e n t / p a r t s , s u b s y s t e ms , a n d t h e c o mp l e t e s y s t e m. T h e a c c e p t a n c e
c r i t e r i a f o r p a r t s a n d ma t e r i a l s s h a l l b e s pe c i f i e d b y s t a n d a r d s p e c i f i c a t i o n s w h e n
applicable.
E n g in e e r in g d r a w in g s a r e d e f in e d a s th o s e d r a w in g s th a t c o mmu n ic a te th e r e q u ir e me n ts
f o r th e ma n u f a c tu r e o f th e e n d - p r o d u c t ite ms , th e ir a s s e mb ly, a n d th e ir in s ta lla tio n in th e
e n d p r o d u c t.
T h e e n g in e e r in g d r a w in g s p r e p a r e d b y G S F C d e s ig n p e r s o n n e l o r c o n tr a c to r s o n G S F C
d r a w in g f o r ma t u s in g G S F C d r a w in g n u mb e r s s h a ll b e k n o w n a s “ G o v e r n me n t D e s ig n
A c tiv ity D r a w in g s . ” P a r ts ma d e to th e s e d r a w in g s typ ic a lly w o u ld b e ma n u f a c tu r e d
th r o u g h th e F a b r ic a tio n E n g in e e r in g Br a n c h , E n g in e e r in g S e r v ic e s D iv is io n , G S F C.
“ C o n t r a c t o r D e s i g n A c t i v i t y D ra w i n g s ” ” ” ” ( w h i c h a r e a c o mp a n y 's d r a w i n g s b e a r i n g t h e
c o mp a n y n a me , a d d r e s s , f e d e r a l c o d e id e n tif ic a tio n , a n d d r a w in g n u mb e r ) s h o u ld b e u s e d
w h e n t h e c o mp a n y i s d e s i g n i n g a n d d e l i v e r in g t h e f i n i s h e d p r o d u ct i n a c c o r d a n c e w i t h
t h e t e r ms o f a N A S A c o n t r a c t .
The Design Activity shall be defined as an activity having responsibility for the design
o f a n i t e m o r s y s t e m. T h e a c t i v i t y ma y b e a g o v e r n me n t e n t i t y , a c o n t r a c t o r , a v e n d o r , o r
a n o th e r o r g a n iz a tio n s u c h a s a u n iv e r s ity.
A l t h o u g h g e n e r a l l y i n a c c o r d a n c e w i t h t h e D e p ar t me n t o f D e f e n s e a n d i n d u s t r y p r a c t i c e s
a n d p r o c e d u r e s , th is d r a w in g s ta n d a r d s man u a l d o e s c o n ta in s p e c if ic d if f e r e n c e s a n d
e x c e p t i o n s t o E n g in e e r in g D r a win g P r a c tic e s, MI L - S T D - 1 0 0 E . T h is ma n u a l, w h ile n o t
in te n d e d a s a ma n u a l o f in s tr u c tio n in th e b a s ic p r in c ip le s o f d r a f tin g , d o e s s e t f o r th th e
min i mu m r e q u i r e me n t s a c c e p t a b l e a t t h e G S F C. O n e o f t h o s e r e q u i r e me n t s i s t h a t
p e r s o n s e n g a g e d in th e p r e p a r a tio n o f d r a w in g s s h a ll h a v e a th o r o u g h u n d e r s ta n d in g o f
th e f u n d a me n ta ls o f d r a f tin g a n d g e o me tr ic a l d ime n s io n in g a n d to le r a n c in g ( in
a c c o r d a n c e w i t h A N S I Y 1 4 . 5 M - 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g ) in o r d e r to
p r o d u c e in te r p r e ta b le d r a w in g s .
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ENGINEERING DRAWING STANDARDS MANUAL
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
1.
DRAWING ELEMENTS
1.1.
Drawing Sizes
3
T h e f o llo w in g ta b le d e f in e s th e s ta n d a r d d r a w in g s iz e s , a n d th e ir le tte r
d e s ig n a tio n s to b e u s e d a t G S F C:
Letter
Designation
B
C
D
E
F
J
Sheet Width
(inches)
11
17
22
34
28
34
Sheet Length
(inches)
17
22
34
44
40
48 to 144(a)
Margin
(inches)
3/8
1/2
1/2
1/2
1/2
1/2(b)
Notes:
( a ) L e n g th s f o r “ J ” r o l l s i z e t o b e i n l l - i n c h i n c r e me n t s .
( b ) N o t in c lu s iv e o f a d d e d p r o te c tiv e ma r g in s o f a t le a s t 2 in c h e s o n b o th e n d s o f
roll size drawings.
1.2.
Multisheet Drawings
M u l t i s h e e t d r a w i n g s a r e p e r mi t t e d i n a l l s i z e s .
a . T h e f i r s t s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l a l w a y s c o n ta i n t h e c o mp l e t e T i t l e
b lo c k , L is t o f Ma te r ia l, Re v is io n Blo c k , a n d g e n e r a l n o te s .
b . A l l s h e e t s o f mu l t i s h e e t d r a w i n g s s h a l l b e o f t h e s a me l e t t e r s i z e . U s e o f
mu l t i s h e e t d r a w i n g s s h a l l b e f o u n d t o b e a d v a n t a g e o u s f o r c e r t a i n t y p e s o f
s c h e ma tic s a n d d ia g r a ms .
c.
T h e s h e e ts o f “ J ” s iz e d r a w in g s ma y b e a n y o f th e a b o v e - n o te d le n g th s a n d
ma y b e in te r mix e d in d if f e r e n t le n g th s .
d . S h e e t n u mb e r in g f o r a ll f ir s t s h e e ts s h a ll in c lu d e th e to ta l n u mb e r o f s h e e ts ,
a s “ S H E E T 1 O F 1 , ” “ S H E E T 1 O F 2 , ” e tc . N u mb e r i n g o f c o n t i n u a t i o n s h e e t s
s h a l l b e l i mi t e d t o s t a t i n g t h e s p e c i f i c s h e e t n u mb e r ( e . g . , “ S H E E T 2 , ”
“ S H E E T 3 ” ) w i t h o u t s p e c i f y i n g t h e t o t a l n u mb e r o f s h e e t s .
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ENGINEERING DRAWING STANDARDS MANUAL
1.3.
Zoning
V e r tic a l a n d h o r iz o n ta l z o n in g ma y b e u s e d if n e c e s s a r y to p r o v id e o r ie n ta tio n to
t h e f i e l d o f d r a w i n g s . Z o n in g i s ma n d a t o r y f o r mu l t i s h e e t d r a w i n g s “ D ” s i z e a n d
l a r g e r a n d s i n g l e - s h e e t d r a w i n g s “ E ” s i z e an d l a r g e r . Z o n e s s h a l l b e i d e n t i f i e d b y
a l p h a b e t i c a l ( u p p e r c a s e ) a n d n u me r i c a l e n t r i e s i n t h e mar g i n s p a c e s a s i n d i c a t e d
in F ig u r e 1 . Z o n e s iz e s s h a ll b e 8 ½ in c h e s ( w id th ) b y 1 1 in c h e s ( le n g th ) f o r “ E ”
and “J” size, 7 inches (width) by 10 inches (length) for “F” size, and 5½ inches
(width) by 8½ inches (length) for “D” size.
SECURITY CLASSIFICATION
5
3
4
2
1
D
C
VERTICAL ZONE IDENTIFICATION
ALPHABETICALLY LETTERED
FROM BOTTOM EDGE
D
ALTERNATE
LOCATION OF
GENERAL NOTES
C
B
B
DRAWING NUMBER ON REVERSE
SIDE FOR ROLL-SIZE DRAWINGS
PREFERRED
LOCATION OF
GENERAL NOTES
APPROX. 2-INCH ADDITIONAL MARGIN
FOR PROTECTION OF ROLL-SIZE DRAWINGS
HORIZONTAL ZONE
IDENTIFICATION NUMBERED
FROM RIGHT-HAND EDGE
APPROX. 2-INCH ADDITIONAL MARGIN
FOR PROTECTION OF ROLL-SIZE DRAWINGS
DRAWING NUMBER ON REVERSE
SIDE FOR ROLL-SIZE DRAWINGS
REVISION NOTES
SECURITY NOTATION (IF REQUIRED)
A
TITLE BLOCK
5
4
3
2
A
1
SECURITY CLASSIFICATION
Figure 1: Format for B, C, D, E, F, and J Size Drawings
1.4.
Title Block and Revision Block
T i t l e b lo c k s a n d r e v is i o n b lo c k s s h a l l b e p r e p a r e d a n d c o mp l e t e d a s f o l l o w s :
T h e T i t l e b lo c k o f s i n g le - s h e e t d r a w i n g s , f i r s t s h e e t s o f mu l t i s h e e t d r a w i n g s , a n d
r e v is io n b lo c k s s h a ll a p p e a r a s s h o w n in e ith e r F ig u r e 2 a o n p a g e 5 ( d ime n s io n a l
s y s t e m/ i n c h e s ) o r F i g u r e 2 b o n p a g e 6 ( d i me n s i o n a l s y s t e m/ mi l l i me t e r s ) . T h e
i n f o r ma t i o n r e q u ir e d i n t h e T i t l e b lo c k s h a l l b e a s s p e c i f i e d o r r e f e r e n c e d b y
i t e ms 1 t h r o u g h 2 8 , b e l o w . T h e T i t l e b lo c k o f c o n t i n u a t i o n s h e e t s f o r mu l t i s h e e t
d r a w in g s s h a ll c o n ta in in f o r ma tio n lis te d in ite ms 1 , 2 , a n d 4 th r o u g h 1 1 .
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5
ENGINEERING DRAWING STANDARDS MANUAL
REVISION
ZONE
25
DATE
26
APPROVAL
27
28
FOLD
24
DESCRIPTION
LINE
SYM
REV
24
1
13
15
19
18
10
9
8
20
7
6
21
5
3
4
2
23
22
GD
14
11
12
REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED - DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
±.005
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
16
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
APPROVED-STRESS
THIS DRAWING WAS PRODUCED USING
SOFTWARE:
VERSION:
REV
GD
APPROVED-ENGINEER
NEXT ASSY
FILE NAME:
USED ON
CODE
SCALE
WT.
SH
FOLD
LINE
Figure 2a: Sample “Title and Revision Block” (Enlarged View)
for Dimensional System/Inches
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
6
ENGINEERING DRAWING STANDARDS MANUAL
REVISION
DESCRIPTION
ZONE
25
26
APPROVAL
27
28
FOLD
24
DATE
LINE
SYM
REV
24
1
13
15
19
18
16
10
9
20
8
7
6
5
21
3
4
2
24
23
22
GD
14
11
12
17
ITEM
REQD
REQD
PART NO
DESCRIPTION
NO
MATERIAL
MATERIAL SPEC & NO
LIST OF MATERIAL
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
METRIC
NATIONAL AERONAUTICS AND
SPACE ADMINISTRATION
NAME
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HYBRID
Goddard Space Flight Center
INIT
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
METRIC/INCH
GREENBELT, MARYLAND
NON FLIGHT
HARDNESS TEST NOT REQUIRED
DESIGNER
ON FIELD OF DRAWING THUS
THIRD ANGLE PROJECTION
NON-DESTRUCTIVE EXAMINATION (NDE) NOT REQD
DRAWN
TITLE
NDE REQUIRED PER S-313-009 CODE
CHECKED
UNLESS OTHERWISE SPECIFIED
DIMENSION ARE IN MM
THIS DRAWING WAS PRODUCED USING
SOFTWARE:
DIMENSION TOLERANCES
3.2
2 DECIMAL
±0.25
1 DECIMAL
MECHANICAL ENGINEER
VERSION:
FILE NAME:
SYSTEMS ENGINEER
±0.5
FINISH
DECIMAL
±1
IN
ANGLE
±1°
MICRO-
RAD/CHAM
±0.5
METERS
REV
ELECTRICAL ENGINEER
GD
STRESS ENGINEER
REMOVE ALL BURRS AND SHARP
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
EDGES R 0.25 OR CHAMFER MAX
Figure 2b: Sample “Title and Revision Block” (Enlarged View)
for Dimensional System/Millimeters
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
1
DRAWING NO.: See page 60.
2
“SH
OF
on sheet 1.
3
W T : E n te r u n it w e ig h t c a lc u la te d a t time o f d e s ig n if r e q u ir e d .
4
T I T L E : S e e p a r a g r a p h 2 . 1 o n p a g e 1 1 f o r s e le c tio n a n d a r r a n g e me n t o f
drawing title. See paragraph 3.3.2 on page 32 for drawing title size.
5
S C A L E : E n te r s c a le . S e e p a r a g r a p h 3 . 4 o n p a g e 3 2 f o r s e le c tio n o f s c a le .
6
CODE: For drawings prepared by the Goddard Space Flight Center (GSFC)
w ith a n o f f ic ia l G S F C d r a w in g n u mb e r , e n te r th e th r e e - d ig it G S F C c o d e
id e n tif yin g th e g r o u p r e s p o n s ib le f o r th e d r a w in g .
7
” : E n t e r s h e e t n u mb e r a s a p p l ic a b l e . I n d i c a t e t o t a l s h e e t s o n l y
F o r d r a w in g s p r e p a r e d b y a c o n tr a c to r w ith a c o n tr a c to r d r a w in g n u mb e r a n d
f o r ma t, th e c o n tr a c to r 's c o d e n u mb e r f r o m th e Co mme r c ia l a n d G o v e r n me n t
E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8 ( f o r me r l y F e d e r a l S u p p ly Co d e fo r
M a n u fa c tu r e r s ( F S C M ) H 4 a n d F e d e r a l S u p p ly Co d e s fo r No n - M a n u fa c tu r e r s
( F S C N M) H 8 ) s h a l l a p p e a r .
7
DATE: Enter date of initials.
8
D E S I G N E R : E n t e r d e s i g n e r ' s p r i n t e d n a me a n d i n i t i a l s .
9
D R A W N : E n te r d r a f ts ma n 's p r in te d n a me o r if d r a w n b y th e d e s ig n e r , th e
d e s ig n e r ’ s p r in te d n a me ma y b e r e p e a te d .
1 0 C H E C K E D : E n t e r d e s i g n a n a l y s t ' s p r i n t e d n a me . T h i s n a me s h a l l b e a n
in d e p e n d e n t n a me f r o m a ll o th e r n a me s o n th e d r a w in g . I t r e p r e s e n ts th a t th e
d r a w in g h a s b e e n c h e c k e d a g a in s t th e p a r a me te r s o f th is d r a w in g ma n u a l a n d ,
w h e r e p o s s i b le , t o f o r m, f i t , f u n c t i o n , a n d f e a s i b i l i t y . T h e c h e c k e r mu s t h a v e
a th o r o u g h u n d e r s ta n d in g o f th e me th o d s a n d p r a c tic e s o f g e o me tr ic
tolerancing and be able to specify such practices in accordance with ANSI
S ta n d a r d Y 1 4 . 5 M- 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g .
1 1 A P P R O V E D : E n te r th e p r in te d n a me s o f G S F C p e r s o n n e l a s s ig n e d to a p p r o v e
th e d r a w in g . P r o j e c t r e q u ir e me n ts f o r d r a w in g n a me s s h a ll v a r y f r o m p r o g r a m
t o p r o g r a m, b u t e a c h n a me s h a l l b e i d e n t i f i e d . F o r e x a mp l e , a f t e r e a c h
a p p r o v a l n a me , n o te th e f o llo w in g : “ E N G ” f o r e n g in e e r , “ S T RE S S ” f o r s tr e s s
e n g in e e r , “ Q A ” f o r q u a l i t y a s s u r a n c e e n g in e e r , “ M A T L ” f o r ma t e r i a l s
e n g i n e e r , “ E L E C ” f o r e l e c t r ic a l e n g i n e e r , e t c . A l l n a me s i n l i n e i t e ms 8
t h r o u g h 1 1 mu s t b e l e g i b l e . T h e h a n d -w r i t t e n i n i t i a l s o n t h e p a p e r o r i g i n a l
a r e t h e o f f i c i a l a p p r o v a l o f t h a t d o c u me n t .
1 2 U S E D O N : E n te r a c r o n ym n a me o f p r o g r a m a n d a c r o n ym n a me o f s u b s ys te m
o r e x p e r ime n t w h e r e a p p lic a b le .
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ENGINEERING DRAWING STANDARDS MANUAL
1 3 N E X T A S S Y : E n t e r d r a w i n g n u mb e r o n w h i c h t h e p a r t i s n e x t u t i l i z e d ,
mo d if ie d , o r a s s e mb le d . I n th e c a s e o f to o lin g d r a w in g s , in th e N e x t
A s s e mb ly b lo c k r e f e r to a g e n e r a l n o te th a t s ta te s “ T h is d r a w in g is u s e d to
f a b r ic a te ( d r a w in g n u mb e r ) . ” I n s ta lla tio n d r a w in g s s h o u ld r e f le c t a to p
c o n f ig u r a tio n d r a w in g n u mb e r a s th e n e x t a s s e mb ly. W h e n a c o n f ig u r a tio n
d r a w in g is n o t b e in g p r o d u c e d , th e in s ta lla tio n d r a w in g s h a ll in d ic a te b y n o te
“ T h e in s ta lla tio n f o r ms a p a r t o f th e c o n f ig u r a tio n f o r p r o g r a m ( p r o j e c t
n a me ) . ”
1 4 E X A MI N A T I O N : T h e a p p r o p r i a t e “ N o n - D e s t r u c t i v e E x a mi n a t i o n ( N D E )
Re q u ir e d ” b lo c k s h a ll b e c h e c k e d o f f , an d th e a d d itio n o f th e a p p lic a b le c o d e
o r “ s e e n o te X X ” s h a ll b e a d d e d w h e r e r e q u ir e d . Re f e r to T e s tin g a n d
I n s p e c tio n N o te s o f th e g e n e r a l n o te s s e c tio n p a r a g r a p h 2 . 4 . 4 . 6 o n p a g e 2 0 .
1 5 F L I G H T H A R D W A R E a n d H A R D N E S S T E S T I N G : T h e F lig h t H a r d w a r e b lo c k
mu s t b e c h e c k e d o f f w h e n th e p a r t is u s e d in a c tu a l f lig h t c o n f ig u r a tio n s . T h e
a p p r o p r ia te H a r d n e s s T e s tin g b lo c k s h a ll b e c h e c k e d o f f r e g a r d l e s s o f w h e t h e r
th e p a r t is f lig h t h a r d w a r e o r n o t.
1 6 O n CA D - p r o d u c e d d r a w in g s , a d d a 3 . 5 - in c h - lo n g b y 0 . 8 8 - in c h - h ig h b lo c k a s
follows:
THIS DRAWING WAS PRODUCED USING:
SO F T W A R E: (a)
VER SIO N : (b)
F IL EN A M E: (c)
Notes:
( a ) S o f t w a r e u s e d ( e x a mp l e : “ A U T O C A D ” )
( b ) V e r s i o n o f s o f t w ar e ( e x a mp le : “ 1 0 c 7 ” )
( c ) F ile n a me ( e x a mp le : “ G S F C1 2 3 4 ” )
1 7 ME T R I C / H Y B R I D ME T R I C - I N C H : A d d “ X ” t o t yp e o f d r a w i n g b l o c k . A A A A
1 8 I T E M N O . : E n te r ite m n u mb e r s w h e n mo r e th a n o n e typ e o f ma te r ia l o r p a r t is
r e q u ir e d , a n d c o o r d in a te d r a w in g c a llo u ts o n th e d r a w in g f ie ld . P a r ts ma d e o f
th e s a me ma te r ia l, c o n d itio n , a n d s p e c if ic a tio n s h a ll b e a s s ig n e d o n ly o n e ite m
n u mb e r , e v e n th o u g h th e p a r t ma y b e r e q u ir e d in v a r io u s s iz e s a n d
t h i c k n e s s e s . T h e q u a n t i t y f o r s u c h i t e ms i n t h e L i s t o f M a t e r i a l ( L / M ) s h a l l b e
s t a t e d a s “ A / R ” w i t h t h e s p e c i f i c s i z e s s pe lle d o u t in th e f ie ld o f th e d r a w in g .
Re f e r to F ig u r e 3 o n p a g e 1 0 , F ig u r e 3 4 o n p a g e 8 0 , a n d S e c tio n 8 . 6 , F in d o r
I te m N u mb e r S ys te m o f I d e n tif ic a tio n , o n p a g e 7 9 . D o n o t s k ip ite m n u mb e r s
o n n e w d r a w in g s .
1 9 R E Q D : E n t e r q u a n t i t y o f p a r t s r e q u ir e d o n ly f o r t h e p a r t s o f a n i n s e p a r a b le
a s s e mb ly o r a s s e mb ly d r a w in g .
20
P A R T N O . : E n te r id e n tif yin g p a r t n u mb e r s w h e n r e q u ir e d ( G o v e r n me n t,
c o n tr a c to r , v e n d o r , o r o th e r ) . O n n e w d r a w in g s , g r o u p lik e ite ms to g e th e r .
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9
21
D E S C R I P T I O N : E n t e r ma t e r i a l d e s c r i p t i o n ( p l a t e , e t c . ) o r a p a r t n a me t i t l e i f
it is a n o th e r d r a w in g . E n c lo s e r e f e r e n c e i n f o r ma t i o n s u c h a s f a s t e n e r s i z e s i n
brackets.
22
M A T E R I A L : E n t e r t h e ma t e r i a l f r o m w h i c h t h e p a r t i s f a b r i c a t e d . E x a mp le s :
“AL ALY”; “CRES”; “BE CU.”
2 3 M A T E R I A L S P E C . : E n t e r t h e a p p l i c a b l e ma t e r i a l s p e c i f i c a t i o n s , n u mb e r , a n d
f in a l c o n d itio n . E x a mp le s : “ Q Q - A - 2 5 0 /1 1 6 0 6 1 - T 6 ” f o r A L A L Y p la te ;
“ASTM A582 303 COND A” for CRES bar.
T h e in f o r ma tio n r e q u ir e d in th e r e v is io n b lo c k s h a ll b e a s s p e c if ie d o r
r e f e r e n c e d b y i t e ms 2 4 t h r o u g h 2 8 , b el o w , a n d i n a c c o r d a n c e w i t h “ D r a w i n g
Re v is io n s , ” p a r a g r a p h 7 , p a g e 6 8 .
2 4 R E V I S I O N S - S Y M: E n te r r e v is io n s ymb o l.
25 REVISIONS - ZONE: Enter zone (where used).
2 6 R E V I S I O N S - D E S C R I P T I O N : E n te r d e s c r ip tio n o f th e r e v is io n ( r e f e r to
S e c tio n 7 , “ D r a w in g Re v is io n s ” ) .
2 7 R E V I S I O N S - D A T E : E n te r d a te a p p r o v e d b y a u th o r iz e d s ig n e r ( s ) in b lo c k .
2 8 R E V I S I O N S - A P P R O V A L : E n te r s ig n a tu r e o f G S F C p e r s o n a s s ig n e d to
a p p r o v e . I f c h a n g e w a s b y a p p r o v e d E O , d r a w in g o n ly n e e d s a p p r o v a l o f th e
d r a f ts ma n o r p e r s o n in c o r p o r a tin g th e c h a n g e , a n d th e c h e c k e r . I f c h a n g e s
ma d e a r e n o t c o v e r e d b y a n E O , th e n a p p r o v a l mu s t in c lu d e th e e n g in e e r .
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ENGINEERING DRAWING STANDARDS MANUAL
DETAIL DRAWING
WIRE
ITEM
NO.
REQD
BE CU
DESCRIPTION
PART NO.
MATERIAL
QQ-C-530, COND 1/2 HT
MATERIAL SPEC & NO.
DETAIL SHOWN & OPPOSITE DRAWING
ITEM
NO.
REQD
-2
BAR OPPOSITE
AL ALY
QQ-A-225/8 6061-T6
-1
BAR SHOWN
AL ALY
QQ-A-225/8 6061-T6
PART NO.
DESCRIPTION
MATERIAL
MATERIAL SPEC & NO.
INSEPARABLE ASSEMBLY DRAWING
2
2
1
1
ITEM
NO.
MS21209C0415
INSERT (4-40 UNC x .168 LG)
PLATE
REQD
PART NO.
SEE NOTE 1
AL ALY
DESCRIPTION
MATERIAL
QQ-A-250/11 6061-T6
MATERIAL SPEC & NO.
INSEPARABLE ASSEMBLY DRAWING
2
3
1
A/R
MS21209C0415
PLATE
GD1000001
ITEM
NO.
REQD
INSERT (4-40 UNC x .168 LG)
SEE NOTE 1
AL ALY
QQ-A-250/11 6061-T6
PLATE ASSY
PART NO.
DESCRIPTION
MATERIAL
MATERIAL SPEC & NO.
ASSEMBLY DRAWING
4
3
3
MS51957-12
SCREW (4-40 UNC 2A x .187 LENGTH)
3
2
2
GD1003451
BLOCK
2
1
GC1003467-2
PLATE
GC1003467-1
PLATE
1
1
ITEM
NO.
REQD REQD
GE1002500-2
PADDLE ASSEMBLY OPPOSITE
GE1002500-1
PADDLE ASSEMBLY SHOWN
DESCRIPTION
PART NO.
CRES
MATERIAL
MATERIAL SPEC & NO.
Notes:
(a) Paint, adhesives, and protective coatings shall appear in note form.
(b) Hardware shall appear in List of Material with required quantity.
(c) “A/R” shall be used in REQD column when same material (same material
specification and condition) appears more than once in different sizes in
the field of the drawing.
(d) “A/R” may be used to indicate large quantities of rivets.
(e) A material specification shall only appear once in the List of Material
unless material conditions vary or a Shown and Opposite part is
required. Sheet and plate shall not be listed as separate items.
Figure 3: Examples of “List of Material”
1.5.
Drawing Format
T h e d r a w in g f o r ma t f o r th e d r a w in g s iz e s lis te d o n p a g e 3 , in c lu d in g z o n in g ,
d r a w in g n u mb e r s , s e c u r ity c la s s if ic a tio n , e tc . , is s h o w n in F ig u r e 1 , p a g e 4 .
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ENGINEERING DRAWING STANDARDS MANUAL
2.
NOMENCLATURE
2.1.
Drawing Title
11
G e n e r a l i n f o r ma t i o n f o r t h e s e l e c t i o n o r d e v e l o p me n t o f a d r a w i n g t i t l e i s a s
follows:
a.
The title should be as brief as possible but should contain sufficient
in f o r ma tio n to c a te g o r iz e th e p a r t p r o p e r ly a n d to d is tin g u is h it f r o m o th e r
s i mi l a r p a r t s .
b. The drawing title shall consist of the following:
1 . I d e n tif yin g n o u n o r n o u n p h r a s e .
2 . T h e mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e .
3 . T h e n e x t mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e .
T h e n o u n o r n o u n p h r a s e e s ta b lis h e s a b a s ic c o n c e p t o f a n ite m. T h e
mo d i f i e r s s e r v e t o n a r r o w t h e a r e a o f c o n c e p t e s ta b lis h e d b y th e b a s ic n a me .
A mo d if ie r is s e p a r a te d f r o m th e n o u n o r n o u n p h r a s e b y a c o mma a n d f r o m
a n y p r e c e d i n g mo d i f i e r b y a c o mma . T h e t y p e d e s i g n a t o r a n d / o r a n y
a d d itio n a l mo d if ie r s r e q u ir e d to f u r th e r id e n tif y a n ite m a r e s e p a r a te d f r o m
the first part of the title by a dash. Where applicable, the word “ASSEMBLY”
s h a ll b e u s e d a s th e la s t w o r d o f th e n o u n p h r a s e .
EXAMPLES:
“ B e a m, H o i s t i n g , G u i d e d M i s s i l e ”
“ C o v e r , P r o t e c t i v e , R o c k e t M o t o r—Fo r w a r d S e c t i o n ”
“ Ca b in e t, E le c tr ic a l E q u ip me n t—CY - 1 4 7 ”
“ T r a n s p o r t a t i o n—Do l l y A s s e mb l y , E a r t h S a t e l l i t e ”
c.
T h e n o u n , o r n o u n p h r a s e , is n e v e r a b b r e v ia te d . A b b r e v ia tio n s a r e u s e d in th e
mo d i f i e r s o n l y w h e n s p a c e i s l i mi t e d . W h e n u s e d , a b b r e v i a t i o n s s h a l l c o n f o r m
to A b b r e v ia tio n s , p a r a g r a p h 2 . 2 o n p a g e 1 2 .
d . W h e n o n e d r a w in g s u p e r s e d e s a n o th e r , th e n e w d r a w in g , w h e n p r a c tic a l, h a s
t h e s a me t i t l e .
e . P a r e n th e s e s a r e n o t u s e d t o e n c l o s e a n y p o r t i o n o f t h e d r a w i n g t i t l e .
f.
P r o g r a m n a me s ( o r a b b r e v ia tio n s ) s h o u ld b e a d d e d to th e “ U s e d O n ” b lo c k a n d
n o t t h e T i t l e b lo c k ; e x c e p t i o n s a r e o n t h e f i n a l o r t o p a s s e mb l y d r a w i n g .
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2.2.
ENGINEERING DRAWING STANDARDS MANUAL
Abbreviations
T h e p u r p o s e o f th is s e c tio n is to p r o v id e a lis t o f a u th o r iz e d a b b r e v ia tio n s f o r u s e
o n d r a w in g s a n d a s s o c ia te d d o c u me n ts . W h e n u s e d , a b b r e v ia tio n s a n d a c r o n yms
shall be in accordance with GSFC STD-256-WE-1 and MIL-STD-12 (in that order
of precedence).
a. Uppercase Gothic letters shall be used.
b . A b b r e v ia tio n s f o r w o r d c o mb in a tio n s ( e . g . , MMC—Ma x imu m Ma te r ia l
Co n d itio n ) s h a ll b e u s e d a s s u c h a n d s h a ll n o t b e s e p a r a te d f o r u s e s in g ly.
S i n g l e a b b r e v i a t i o n s ma y b e c o mb i n e d w h e n n e c e s s a r y .
c.
T h e s a me a b b r e v ia tio n s h a ll b e u s e d f o r a l l t e n s e s , t h e p o s s e s s i v e c a s e a n d t h e
s in g u la r a n d p lu r a l f o r ms o f a g iv e n w o r d .
d . A b b r e v i a t i o n s s h o u l d b e u s e d o n l y t o s a v e s p a c e o r t i me , b u t n e v e r a t t h e
e x p e n s e o f c la r ity.
e . P e r i o d s s h a l l b e u s e d w i t h a b b r e v i a t i o n s t h a t s p e l l e n t i r e w o r d s t o p r o v id e
c la r ity a n d to a v o id mis in te r p r e ta tio n .
T h e f o l l o w i n g a b b r e v i a t i o n s a r e a c c e p t a b le t o u s e a n d a r e “ i n d u s t r y - r e l a t e d ”
a s s o c ia tio n s n o t f o u n d in G S F C S T D - 2 5 6 - W E - 1 o r MI L - S T D - 1 2 .
A F BMA
A n ti- F r ic tio n Be a r in g Ma n u f a c tu r e r s A s s o c ia tio n , I n c .
1 1 0 1 Co n n e c tic u t A v e n u e , N W
S u ite 7 0 0
W a s h in g to n , D C 2 0 0 3 6
AGMA
A me r i c a n G e a r M a n u f a c t u r e r s A s s o c i a t i o n , I n c .
1 5 0 0 K in g S tr e e t
S u ite 2 0 1
A r lin g to n , V A 2 2 3 1 4
ANSI
A me r i c a n N a t i o n a l S t a n d a r d I n s t i t u t e
1 4 3 0 Br o a d w a y
New York, NY 10018
ASME
A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s
3 4 5 E . 4 7 th S tr e e t
New York, NY 10017
ASTM
A me r i c a n S o c i e t y f o r T e s tin g a n d Ma te r ia ls
1916 Race Street
P h ila d e lp h ia , P A 1 9 1 0 3
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ENGINEERING DRAWING STANDARDS MANUAL
AWS
A me r i c a n W e l d i n g S o c i e t y , I n c .
5 5 0 N . W . L e d e u n e Ro a d
P . O . Bo x 3 5 1 0 4 0
Mia mi, F L 3 3 1 3 5
IEEE
I n s t i t u t e o f E l e c t r i c a l an d E l e c t r o n i c E n g i n e e r s , I n c .
445 Hose Lane
P . O . Bo x 1 3 3 1
P is c a ta w a y, N J 0 8 8 5 5 - 1 3 3 1
ISO
I n te r n a tio n a l O r g a n iz a tio n f o r S ta n d a r d iz a tio n /
( O r g a n i s a t i o n I n t e r n a t i o n a l e d e N o r ma l i s a t i o n )
1 , r u e d e V a r e mb é
1211 Geneve 20
S w i t z e r l a n d /S u i s s e
NEMA
National Electrical Manufacturers Association
2 1 0 1 L S tr e e t, N W
W a s h in g to n , D C 2 0 0 3 7
NSA
N a tio n a l S ta n d a r d s A s s o c ia tio n , I n c .
1 2 0 0 Q u in c e O r c h a r d Blv d
G a ith e r s b u r g , MD 2 0 8 7 8
NAS
A e r o s p a c e I n d u s t r i e s A s s o c i a t i o n o f A me r i c a , I n c .
1 2 5 0 I S tr e e t, N W
W a s h in g to n , D C 2 0 0 0 5
SAE
S o c i e t y o f A u t o mo t i v e E n g i n e e r s , I n c .
4 0 0 Co mmo n w e a lth D r iv e
W a r r e n d a le , P A 1 5 0 9 6
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14
2.3.
ENGINEERING DRAWING STANDARDS MANUAL
List of Material
2.3.1.
Requirements on the Body of the Drawing
E a c h p a r t l i s t e d i n t h e L i s t o f M a t e r i a l ( P a r t s L i s t ) mu s t b e
id e n tif ie d a t le a s t o n c e b y a n I te m ( F in d ) N u mb e r o n th e b o d y o f
th e d r a w in g ( e x c e p t s in g le ite m d r a w in g s a n d s h o w n a n d o p p o s ite
ite m d r a w in g s ) .
Note:
P a r t s s h a l l b e b r a c k e t e d , i n d i c at i n g r e f e r e n c e , w h e n t h e y a r e
id e n tif ie d b y n u mb e r a n d a r e n o t n o te d in th e L is t o f Ma te r ia l.
S u c h p a r ts a r e s h o w n in p h a n to m. Re p e a te d ite m n u mb e r s s h a ll b e
indicated as reference either within brackets or by the word “REF.”
2.3.2.
Requirements in the List of Material
a . T h e L i s t o f M a t e r i a l i s a l i s t o f a l l p a r t s a n d ma t e r i a l s c a l l e d
o u t o n th e d r a w in g . S e e F ig u r e 3 o n p a g e 1 0 .
b . T h e q u a n t i t y o f p a r t s n o te d i n t h e L i s t o f M a t e r i a l i s t h e n u mb e r
r e q u ir e d t o c o mp l e t e t h e n o te d a s s e mb l y .
c.
W h e n a n e w d r a w in g is ma d e , a ll p a r ts in th e L is t o f Ma te r ia l
s h o u ld b e g r o u p e d a s to typ e , s u c h a s d a s h n u mb e r ( f o r s h o w n
a n d o p p o s ite a s s e mb lie s ) , G S F C d r a w in g s ( f o r d e ta ile d p a r ts ) ,
MS p a r ts , N A S p a r ts , e tc . , a n d lis te d in th is s e q u e n c e .
d . Q u a n t i t i e s o f B u l k I t e ms a n d p l a c e me n t : r e f e r t o n o t e s ( a )
th r o u g h ( e ) o n F ig u r e 3 o n p a g e 1 0 .
e.
P r e f e r r e d p a r ts lis ts f o r p a r ts , ma te r ia ls , a n d p r o c e s s e s c a n b e
f o u n d in a n u n o f f ic ia l p u b lic a tio n a v a ila b le f o r v ie w in g in th e
Mechanical Engineering Branch. The “Design Selection Guide”
c o n ta in s a w id e r a n g e o f h a r d w a r e , ma te r ia ls , d e s ig n s ta n d a r d s ,
a n d p r o c e s s e s . I t s h a l l b e n o te d t h a t n o t a l l o f t h e i t e ms i n t h i s
reference guide are rated for space flight use.
Note:
A ll f a s te n e r s u s e d in f lig h t h a r d w a r e a n d c r itic a l n u ts a n d b o lts
u s e d o n g r o u n d s u p p o r t e q u ip me n t, in c lu d in g a ll f lig h t/G S E
i n t e r f a c e s , mu s t me e t t h e s p e c i f i c a t i o n G S F C F a s t e n e r I n t e g r i t y
R e q u ir e m e n ts, G S F C S - 3 1 3 - 1 0 0 , Ma te r ia ls Br a n c h , O f f ic e o f
F lig h t A s s u r a n c e .
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2.4.
15
Notes on Drawings
I n f o r ma tio n o th e r th a n p ic to r ia l v ie w s a n d d ime n s io n s n e c e s s a r y f o r c o mp le tin g a
d r a w i n g i s c l a s s i f i e d a s “ n o t e s . ” T h e tw o typ e s o f n o te f o r ms a r e G e n e r a l N o te s
a n d L o c a l C h a r a c t e r N o t e s . N o t es o n a d r a w i n g t a k e p r e c e d e n c e o v e r
s p e c if ic a tio n r e q u ir e me n ts ; h e n c e , n o te s c o n f lic tin g w ith r e f e r e n c e d
specifications shall not be placed on a drawing unless they are necessary for
d e v ia tio n s f r o m c e r ta in p r o v is io n s o f th e s p e c if ic a tio n .
2.4.1.
Security Classification
The security classification “Top Secret,” “Secret,” or
“ Co n f id e n tia l” s h a ll b e lo c a te d o n th e d r a w in g a s n o te d in F ig u r e 1
on page 4.
E a c h s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l b e i n d iv id u a l l y c l a s s i f i e d
a s t o i t s c o n t e n t s . T h e s e c u r i t y s t a mp o n e a c h s h e e t s h a l l b e t h a t o f
th e h ig h e s t c la s s if ic a tio n f o r a n y ite m s h o w n o n th a t in d iv id u a l
s h e e t, n o t th e g e n e r a l o v e r a ll c la s s if ic a tio n o f th e e n tir e s e t o f
d r a w in g s o r th e e n d ite m. O n r o ll- s iz e d r a w in g s , th e s e c u r ity
c la s s if ic a tio n s h a ll b e s h o w n o n th e r e v e r s e s id e a t b o th e n d s o f th e
d r a w in g s n e x t to th e d r a w in g n u mb e r to e n a b le th e c la s s if ic a tio n to
be seen without unrolling the drawing.
A w a r n i n g n o t e s h a l l b e i n c l u d ed a d j a c e n t t o t h e s e c u r i t y
classification located above the Title block and shall read as
follows:
THIS MATERIAL CONTAINS INFORMATION
AFFECTING THE NATIONAL DEFENSE OF THE
UNITED STATES WITHIN THE MEANING OF THE
ESPIONAGE LAWS, TITLE 18 U.S.C., SECTIONS 793
AND 794. THE TRANSMISSION OR REVELATION OF
WHICH IN ANY MANNER TO AN UNAUTHORIZED
PERSON IS PROHIBITED BY LAW.
2.4.2.
Note Location
N o t e s o f g e n e r a l c h a r a c t e r t h a t d o n o t r e q u ir e le a d e r s to in d ic a te
w h e r e th e y a p p ly, a n d f o r w h ic h p r o v is io n h a s n o t b e e n ma d e in th e
s u p p le me n ta r y b lo c k s o f th e d r a w in g f o r ma t, s h a ll b e lo c a te d in th e
f o llo w in g o r d e r o f p r e f e r e n c e :
a.
Adjacent to the upper left border and to the left of all views.
b . I mme d ia te ly to th e le f t o f th e r e v is io n b lo c k .
c.
A d j a c e n t t o t h e l o w e r l e f t b o rd e r o r b e l o w t h e r e v i s i o n b l o c k ,
space being left for extending the revision block downward.
This location should be avoided whenever practical because the
space required for revisions cannot be anticipated.
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2.4.3.
Numbering of Notes
G e n e r a l n o te s a r e n u mb e r e d c o n s e c u tiv e ly d o w n w a r d . N o te
n u mb e r s ma y b e id e n tif ie d o n th e f ie ld o f th e d r a w in g b y p la c in g
th e n o te n u mb e r in a p e n n a n t- s h a p e d f la g a t th e g e n e r a l n o te
lo c a tio n a n d in th e f ie ld o f th e d r a w in g , o r in th e L is t o f Ma te r ia l
( M a t e r i a l S p e c i f i c a t i o n c o l u mn ) , w h i c h e v e r l o c a t i o n i s mo r e
a p p r o p r ia te .
2.4.4.
Note Examples
T h e f o l l o w i n g n o t e s a r e l i s t e d a s r e p r e s e n t a t i v e e x a mp l e s a n d
s h o u ld b e u s e d o n E n g in e e r in g D r a w in g s w h e n a p p lic a b le .
S i g n if i c a n t i n f o r ma t i o n i s t o b e i n s e r t e d w h e r e b l a n k ( s ) a r e
in d ic a te d a n d , f o r mo s t c a s e s , th e n o ta tio n s in p a r e n th e s e s a r e f o r
in f o r ma tio n o n ly. ( W h e n n o t a p p lic a b le , d o n o t u s e in n o te ) .
B e f o r e u s i n g t h e r e f e r e n c e d s p e c i f ic a t i o n s , c h e c k t h e D e p a r t me n t o f
Defense Index of Specifications and Standards Publications to
ensure that the specification has not been cancelled or superseded.
U s e e i t h e r o f t h e f o l l o w i n g s t a t e me n t s a s ma i n h e a d i n g f o r n o t e s :
“Except as noted” or “Unless otherwise specified.”
2.4.4.1.
Dimension Notes
ALL DIMENSIONS APPLY AFTER SURFACE
TREATMENT.
DIMENSIONAL LIMITS AND SURFACE ROUGHNESS
DESIGNATIONS APPLY (state “BEFORE” or
“AFTER”) PLATING.
(For other coatings, substitute the
appropriate expression for “plating.”)
DIMENSIONS TO APPLY AFTER STRESS RELIEF.
DIMENSIONING AND TOLERANCING TO BE
INTERPRETED IN ACCORDANCE WITH ANSI
Y14.5M-1982.
(Note need be added only when drawings
are not in compliance with
GSFC X-673-64-1F.)
GEAR TOLERANCES TO BE IN ACCORDANCE WITH
AGMA STANDARD QUALITY (insert number).
DIMENSIONS ARE IN MILLIMETERS.
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TOOLING-CONTROLLED DIMENSION PER
TEMPLATE (or “TOOL”) NUMBER GX XXXXXXX. THE
ACTUAL TOLERANCES ON THE FEATURE'S
LOCATIONS ARE CONTROLLED BY THE TEMPLATE.
(Note to be flagged to toolingaffected dimensions and tolerances,
which are then enclosed in parentheses
to indicate a reference; template
drawings shall carry a note stating
the drawing number of the part they
are used to fabricate.)
TORQUE LIMITS FOR THREADED FASTENERS
SHALL BE IN ACCORDANCE WITH PROJECT
APPROVED SPECIFICATION NUMBER (OR
ENGINEERING ANALYSIS).
2.4.4.2.
Heat Treating Notes
Note for beryllium copper:
HEAT TREAT IN ACCORDANCE WITH MIL-H-7199 TO
( Br i n e l l )
.
Note for steel:
HEAT TREAT IN ACCORDANCE WITH MIL-H-6875 TO
XXX.
(XXX = “Rockwell,” “Brinell,” or
Vickers”).
N o te s f o r a lu min u m:
HEAT TREAT IN ACCORDANCE WITH MIL-H-6088 TO
( Br i n e l l )
.
CONDITION AFTER
H EAT T R EAT T O
(insert “BRAZING” or “WELDING”) IN
ACCORDANCE WITH MIL-H-6088.
AFTER WELDING, SOLUTION HEAT TREAT AND
ARTIFICIALLY AGE TO T-6 CONDITION PER
MIL-H-6088.
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2.4.4.3.
Joining Method Notes (welding, brazing, etc.)
T h e f o llo w in g s p e c if ic a tio n s u p e r s e d e s MI L - W - 8 6 0 4 f o r A lu m. ;
MI L - W - 8 6 1 1 A f o r S te e l, CRE S , a n d H T RE S A L Y ; a n d
MI L - W - 1 8 3 2 6 f o r Ma g n e s iu m:
FUSION WELD IN ACCORDANCE WITH
CLASS
MIL-STD-2219, PROCESS
U SIN G F IL L ER M ET AL
AND APPROPRIATE
FLUX.
(Joint dimension and design should be
specified on the drawing.)
ELECTRON BEAM WELDING IN ACCORDANCE WITH
MIL-W-46132.
SOLDER IN ACCORDANCE WITH NHB 5300.4(3A–1),
USING SOLDER MATERIAL, QQ-S-571, TYPE
.
SOLDER IN ACCORDANCE WITH DOD-STD-1866
(GENERAL SOLDERING PROCESS FOR ALL TYPES
AND MATERIALS FOR NONELECTRICAL
APPLICATIONS).
N o te f o r a lu min u m:
DIP BRAZE IN ACCORDANCE WITH MIL-STD-645;
CONDITION PER
H EAT T R EAT T O
MIL-H-6088.
SILVER SOLDER IN ACCORDANCE WITH
MIL-B-7883, TYPE
G R AD E
USING
SOLDER MATERIAL QQ-B-654, CLASS
.
RIVET IN ACCORDANCE WITH MIL-STD-403.
2.4.4.4.
Plating and Coating Notes
P l a t i n g n o t e s a r e g e n er a l l y n o t f o r s p a c e f l i g h t h a r d w a r e u s e i n
r e s t r i c t e d a r e a s s u c h a s o p t i c s , e l e c t r o n i c s , e t c . , d u e to f la k in g .
CADMIUM PLATE IN ACCORDANCE WITH QQ-P-416,
CLASS
.
TYPE
H A R D C H R O M E P L A T E ( s i z e ) —( s i z e ) T H I C K P E R
, CLASS
; DIMENSIONS
QQ-C-320, TYPE
SHOWN APPLY AFTER PLATING.
NICKEL PLATE IN ACCORDANCE WITH MIL-STD-171,
.
F I N I S H ( p a r a . n u m b e r ) , TYPE
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SILVER PLATE IN ACCORDANCE WITH QQ-S-365,
, G R AD E
.
TYPE
PAINT IN ACCORDANCE WITH MIL-STD-171, TABLE
; F IN ISH N O .
COLOR
IN
ACCORDANCE WITH FED-STD-595 (color
number).
N o te s f o r a lu min u m:
ANODIZE IN ACCORDANCE WITH MIL-A-8625, TYPE
, CLASS
COLOR
(name of color only).
IRIDITE IN ACCORDANCE WITH MIL-C-5541,
.
CLASS
Note for CRES:
PASSIVATE PER QQ-P-35, TYPE
.
OF MIL-STD-171.
F IN ISH
Use paragraph that applies to material
being used.
Note for iron and steel:
APPLY PROTECTIVE PHOSPHATE COATING IN
ACCORDANCE WITH MIL-C-12968, TYPE
.
”if applicable.)
(Add “CLASS
N o t e f o r t i t a n iu m:
SURFACE FINISH TO BE IN ACCORDANCE WITH
AMS 2488, TYPE
.
2.4.4.5.
Surface Preparation Notes
SURFACE TO BE CLEANED AND POLISHED FOR
VACUUM USE. DO NOT USE ROUGE COMPOUNDS
OR CHEMICALS DURING BUFFING OR POLISHING
ON ITEMS REQUIRING TANK-TYPE LEAK TESTS.
EXTERNAL SURFACE TO BE BUFFED TO .
BEFORE ELECTROPOLISHING, MASK ALL
SURFACES MARKED .
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ENGINEERING DRAWING STANDARDS MANUAL
VAPOR DEGREASING PER ASTM D4126, GENERAL
SOLVENT GRADE 1,1,1 TRICHLOROETHANE.
2.4.4.6.
Testing and Inspection Notes
THIS PART SHALL HAVE A LEAK RATE OF NOT
MORE THAN (1 x 10-7 CC/SEC OF HELIUM) WHEN
MEASURED BY A CALIBRATED MASS
SPECTROMETER HAVING A SENSITIVITY OF
(1 x 10-9 CC/SEC WITH GREATER THAN 90%
HELIUM) AT A DIFFERENTIAL OF (ONE)
ATMOSPHERE OR EQUIVALENT TEST.
RADIOGRAPHIC INSPECTION OF ALL WELDS IN
ACCORDANCE WITH MIL-STD-00453.
ULTRASONIC INSPECTION PER MIL-STD-2154,
TYPE
(Insert “I” or “II”), CLASS
.
(I = Immersion Method, II = Contact
Method.)
F o r G e n e r a l F r a c tu r e Co n tr o l P la n fo r P a y lo a d s U s in g th e S p a c e
T r a n s p o r ta tio n S y s te m ( S T S ) , r e f e r to G S F C 7 3 1 - 0 0 0 5 - 8 3 . O n e o f
th e f o llo w in g n o te s s h o u ld b e u s e d f o r p a r ts r e q u ir in g e tc h in g
a n d /o r liq u id p e n e tr a n t in s p e c tio n :
FRACTURE CRITICAL PART - ETCH AND
PENETRANT INSPECT PER GSFC S-313-009,
CODE XXXXX.
(Usually used for machined parts.)
FRACTURE CRITICAL PART - DO NOT ETCH PART.
PENETRANT INSPECT PER GSFC S-313-009,
CODE XXXXX.
(Usually used for rolled parts.)
I f a r e a s o f a p a r t a r e t o b e e t c he d a n d i n s p e c t e d p r i o r t o f i n i s h
ma c h in in g , a s e p a r a te d r a w in g n o te s h o u ld c a ll o u t th is r e q u ir e me n t
t o a v o i d c o s t l y mis t a k e s .
2.4.4.7.
Threaded Inserts — Cleaning and Installation
Notes
N o t e f o r a l u mi n u m a n d ma g n e t i c s u r f a c e s :
CLEAN THREADED INSERTS WITH
TRICHLOROETHANE AND BAKE OUT AT 100
DEGREES CELSIUS FOR 3 TO 4 HOURS PRIOR TO
INSTALLATION. APPLY DRY FILM LUBRICANT
GOVT. DESIGNATION M-6003, TYPE
(insert
“I” or “II”) PER MIL-L-46010 QPL (LIST).
(Type I cure temp. = 150 degrees C.)
(Type II cure temp. = 240 degrees C.)
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INSTALL THREADED INSERTS PER XXX.
(XXX = “MS33537” for coil type,
“MS51835” for Keen type, or
“ M I L -I -4 5 9 3 2 / 1 ” f o r t h i n w a l l t y p e . )
INSTALL CLINCH NUTS PER MIL-N-45938/1.
AFTER THE BONDING EPOXY IS CURED PER NOTE
, AL L IT EM
(insert number)
THREADED INSERTS SHALL BE CAPABLE OF
WITHSTANDING A CORRESPONDING TORQUE
LOAD, AS LISTED IN TORQUE TABLE, WITHOUT
BECOMING LOOSE. ALL THREADS ON THREADED
FASTENERS SHALL BE FREE OF ADHESIVE AND
FOREIGN MATERIAL.
TORQUE TABLE
THREAD SIZE
TORQUE, IN-LBS
6-32 UNC
x.x
...
...
...
...
TAP ALL HOLES PRIOR TO COATING; INSTALL
THREADED INSERT AFTER COATING.
2.4.4.8.
Miscellaneous Notes
PLACE IN BAG AFTER FINAL ELECTROPOLISHING.
BAG SHALL CONFORM TO MIL-P-116, METHOD (see
spec.).
ALTERED PART SOURCE INFORMATION:
PAR T N O .:
VEN D O R :
ADDRESS:
MAINTAIN AS MATCHED SET AFTER MACHINING.
Note for NON-flight parts ONLY:
STEEL STAMP, ETCH, OR ENGRAVE (size) HIGH
+.005
CHARACTER AS SHOWN, X .010 -.000 DEEP.
THIS DRAWING TO BE INTERPRETED IN
ACCORDANCE WITH GSFC X-673-64-1F.
RUBBER STAMP (size) HIGH CHARACTER AS
(insert “INK” or “PAINT”) IN
SH O W N , U SIN G
ACCORDANCE WITH (specification *).
(* Include manufacturer's part number
and address.)
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BAG PART PER MIL-P-116, METHOD
TAG WITH PART NUMBER.”
, AND
ALTERED SURFACES TO HAVE .
(Refer to paragraph 10.4.1, page 93, for
symbol notation.)
FINISH ALL OVER.
(Refer to paragraph 10.4.1, page 93, for
symbol notation.)
SURFACE ROUGHNESS AS XXX:
MACHINED SURFACES .
(where XXX is “ROLLED,” “EXTRUDED,” or
“DRAWN”).
(Refer to paragraph 10.4.1, page 93, for
symbol notation.)
IN SID E C O R N ER S R
MAXIMUM.
UNIT TO BE STRAIGHTENED AND STRESSRELIEVED AFTER WELDING.
WELDED OR BRAZED FILLETS TO BE CONFINED TO
INSIDE SURFACE.
TWINE SHALL CONFORM TO THE REQUIREMENTS
, CLASS
.
OF MIL-T-713, TYPE
A MANUFACTURER'S CERTIFICATION OF MATERIAL
SPECIFICATION COMPLIANCE MUST BE SUPPLIED
W IT H PAR T
(insert number).
MAGNETIC SPECIFICATION--PERMEABILITY OF
(specify units)
.
LESS THAN
COMPONENTS MUST BE PACKAGED AND MARKED
IN ACCORDANCE WITH APPLICABLE INTERSTATE
COMMERCE COMMISSION (ICC) REGULATION
49-CFR71-78; SHIPMENT SHALL BE MADE
DIRECTLY TO THE USING AGENCY. EXPLOSIVE
(or other applicable wording) COMPONENTS
ARE HAZARDOUS AND MUST BE HANDLED IN
ACCORDANCE WITH APPLICABLE SAFETY
REGULATION 49-CFR71-78.
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2.4.4.9.
23
Informational Notes
I n f o r ma tio n a l n o te s , s u c h a s th e f o llo w in g g o v e r n me n t r ig h ts to
ma n u f a c t u r e n o t e , s h a l l a p p e a r a d j a c e n t t o t h e r i g h t b o r d e r a n d
T i t l e b lo c k o f t h e d r a w i n g :
THE XXXX COMPANY, CHICAGO, IL., PART
NUMBER XXXX CORRESPONDS TO THE ITEM
DEPICTED ON THIS DRAWING, WHICH IS
FURNISHED FOR UNRESTRICTED USE IN
CONNECTION WITH ANY U.S. GOVERNMENT
MANUFACTURE OR PROCUREMENT. SUCH USE IS
AUTHORIZED BY THE XXX COMPANY LETTER NO.
AND DATED
XXX SIGNED
. NO OTHER USE IS AUTHORIZED.
2.4.5.
Local Character Notes
N o t e s o f l o c a l c h a r a c t e r , s u c h a s d r i l l n o te s , t h r e a d n o te s , e t c . , t h a t
r e q u i r e l e a d e r s t o i n d i c a t e t h e f e a tu r e s t o w h i c h t h e y a p p ly , s h a l l
b e l o c a t e d i n t h e f i e l d o f t h e d ra w i n g i n p o s i t i o n s a d j a c e n t t o s u c h
f e a t u r e s . E a c h n o t e s h a l l s t a t e t h e n u mb e r o f f e a tu r e s to w h ic h it
applies unless a leader is drawn to each feature.
2.4.6.
General Dimensional Tolerance Notes
T h e g e n e r a l to le r a n c e s e n te r e d in th e s u p p le me n ta r y p o r tio n o f th e
T i t l e b lo c k s h a l l c o n tr o l a l l d ime n s i o n s a p p l i e d t o t h e d r a w i n g ,
e x c e p t t h o s e s p e c i f i c a l l y l a b e l e d “ M a x , ” “ M i n , ” “ R e f , ” “ D a t u m, ” o r
“ Ba s ic , ” o r d ime n s io n s h a v in g to le r a n c e s a p p lie d d ir e c tly th e r e to ,
o r d ime n s io n s c o n tr o lle d b y n o te s o r d o c u me n ts in v o k e d o n th e
d r a w in g . G e n e r a l to le r a n c e s ma y b e c h a n g e d to th e p r e v a le n t
to le r a n c e s th a t a r e r e q u ir e d b y th e d r a w in g typ e . T h is is d o n e b y
s tr ik in g th r o u g h th e to le r a n c e a n d in s e r tin g th e n e w to le r a n c e
b e n e a th th e o ld . I n th e c a s e w h e r e me tr ic to le r a n c in g is r e q u ir e d ,
s e e S e c tio n 1 0 . 2 , s u b p a r a g r a p h i, f o r g e n e r a l to le r a n c e s .
2.5.
Specification Callouts
N o r ma lly, o n ly th e b a s ic d o c u me n t n u mb e r o f a s p e c if ic a tio n s h o u ld b e s h o w n o n
t h e d r a w i n g , i n w h i c h c a s e , t h e l a t e s t i s s u e i n e f f e c t a t t h e t i me o f i n v i t a t i o n t o
b id s h a ll b e imp o s e d in a ll p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n
o c c u r r in g s u b s e q u e n t to th e time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in
c u r r e n t p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e
b y b a s ic d o c u me n t n u mb e r , r e v is io n s , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E n g in e e r in g
Order (EO).
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I f th e b a s ic d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te o f a s p e c if ic a tio n
a r e s h o w n o n a d r a w in g , o n ly th a t p a r tic u la r is s u e s h a ll b e imp o s e d in a ll
p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n o c c u r r in g s u b s e q u e n t to th e
time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e
p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e b y b a s ic
d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t
a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E O .
Re g a r d le s s o f w h e th e r a s p e c if ic a tio n is s h o w n o n th e d r a w in g b y b a s ic d o c u me n t
n u mb e r o n ly o r b y a p a r tic u la r is s u e , s u p e r s e d in g s p e c if ic a tio n s ( n e w n u mb e r )
s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e p r o c u r e me n t a c tio n s u n le s s th e
d r a w in g is r e v is e d to s h o w th e n e w b a s ic d o c u me n t n u mb e r a n d , if a p p lic a b le ,
is s u e a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g
r e v is io n o r E O .
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3.
DRAFTING PRACTICES
3.1.
General
25
T h e s e d r a f t i n g p r a c t i c e s a r e t o b e e mp l o ye d in th e p r e p a r a tio n o f d r a w in g s b y
G S F C p e r s o n n e l t o a c h i e v e c o mmo n a l i t y t h r o u g h o u t a n d r e s u l t i n l e g i b l e
r e p r o d u c tio n s a t th e le a s t c o s t f r o m o r ig in a l d r a w in g s .
D r a w in g s mu s t b e c o mp le te a n d u n a mb ig u o u s in in te r p r e ta tio n . Co mp le te
d r a w in g s c o n ta in o r ma k e r e f e r e n c e to a ll d a ta n e c e s s a r y f o r f a b r ic a tin g a n d
in s ta llin g th e p a r t a n d , w h e n a p p lic a b le , th e n e c e s s a r y te s t r e q u ir e me n ts ,
p r o c u r e me n t r e q u ir e me n ts , a n d s o u r c e .
T h ir d - a n g le o r th o g r a p h ic p r o j e c tio n s h a ll b e u s e d f o r me c h a n ic a l e n g in e e r in g
d r a w in g s . ( Ce r ta in d ia g r a ms , s c h e ma tic s , e tc . , a r e e x c e p te d . ) A lth o u g h o th e r
typ e s o f p r o j e c tio n , s u c h a s is o me tr ic , p e r s p e c tiv e , e tc . , a r e n o t p r o h ib ite d , th e ir
u s e mu s t b e c o n f i n e d t o a n a u x i l i a r y v ie w o n a d r a w i n g o f a c o mp l e x p a r t w h e n
such a view shall aid in visualizing the part.
D r a w in g s n e e d n o t h a v e th r e e v ie w s , ( i. e . , o n e o r tw o v ie w s a r e p e r mis s ib le f o r
o b j e c ts th a t c a n b e c o mp le te ly d e f in e d ) . Co mp le me n ta r y n o te s o r d ime n s io n s a r e
acceptable in place of the additional views. The rule shall be that only those
v ie w s s h a ll b e d r a w n th a t a r e n e c e s s a r y to c o n v e y th e r e q u ir e d c h a r a c te r is tic s o f
t h e p a r t . V i e w s , d ime n s i o n s , e t c . , s h a l l n o t e x t e n d i n t o t h e ma r g i n s o f t h e
d r a w in g .
3.2.
Lines
A c c e p t a b l e q u a l i t y o f r e p r o d u c t i o n s i s d e p en d e n t o n t h e d e n s i t y a n d u n i f o r mi t y o f
lin e w o r k ( a n d le tte r in g ) . T yp e s o f lin e s d e s c r ib e d h e r e in a r e me r e ly lin e c o n v e n t i o n s , b u t i n e v e r y c a s e , e a c h t y p e o f l i ne s h a l l b e o p a q u e a n d o f u n i f o r m w i d t h
a n d s h a ll b e u s e d o n a ll d r a w in g s o th e r tha n d i a g r a ms , s u c h a s s c h e ma t i c s , e t c .
3.2.1.
Ink Lines and Plotted Lines
L in e s , w h e th e r h a n d - d r a w n o r p lo tte d , s h a ll b e o p a q u e a n d o f
uniform width for each type of line. Two widths of lines, i.e., thin
a n d th ic k , w ith th e ir w id th s in th e p r o p o r tio n s o f 1 :2 , s h a ll b e u s e d .
The actual width of each type of line shall be governed by the size
a n d s t y l e o f t h e d r a w i n g ; t h e r e l a t i v e w i d th s o f t h e l i n e s s h a l l
a p p r o x ima te th o s e s h o w n in F ig u r e 4 o n p a g e 2 6 .
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Figure 4: Line Types and Conventions
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3.2.2.
27
Pencil Lines
P e n c il lin e s s h a ll b e o p a q u e a n d o f u n if o r m w id th th r o u g h o u t th e ir
le n g th .
T h e lin e w id th s w h ic h a r e s p e c if ie d f o r in k lin e s d o n o t a p p ly to
p e n c i l l i n e s . C u t t i n g a n d v ie w i n g p la n e l i n e s a r e t h e t h i c k e s t l i n e s
on the drawing. However, the thick lines used for outlines and
o th e r v is i b le l i n e s s h a l l b e s u f f i c i e n t l y p r o mi n e n t t o i mme d ia t e l y
d if f e r e n tia te th e m f r o m lin e s u s e d f o r o th e r p u r p o s e s . H id d e n ,
s e c tio n in g , c e n te r , p h a n to m, e x te n s io n , d ime n s io n , a n d le a d e r lin e s
s h a l l b e t h i n n e r t h a n o u t l i n e s . I n s e l e c t i n g t h e w i d th s o f p e n c i l
lin e s , c o n s id e r a tio n s h a ll b e g iv e n to th e me d iu m o f r e p r o d u c tio n
in v o lv e d to e n s u r e p r o p e r r e p r o d u ctio n a n d r e d u c tio n o f th e th in n e r
lines.
3.2.3.
3.2.3.1.
Types of Lines
Center Lines
Ce n te r lin e s s h a ll b e c o mp o s e d o f lo n g a n d s h o r t d a s h e s , a lte r n a te ly
and evenly spaced, with a long dash at each end. Center lines shall
c r o s s w ith o u t v o id s . S e e F ig u r e 5 , b e lo w , a n d F ig u r e 6 , p a g e 2 8 .
Figure 5: Line Conventions
V e r y s h o r t c e n te r lin e s ma y b e u n b r o k e n if th e r e is n o c o n f u s io n
w i t h o th e r l i n e s . C e n te r l i n e s s ha l l a l s o b e u s e d t o i n d i c a t e t h e
tr a v e l o f a c e n te r . S e e F ig u r e 6 o n p a g e 2 8 .
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Figure 6: Alternate Position
3.2.3.2.
Dimension Lines
D i me n s i o n l i n e s s h a l l t e r mi n a t e i n a r r o w h e a d s a t e a c h e n d . T h e y
s h a l l b e u n b r o k e n e x c e p t w h e r e s p a c e i s r e q u i r e d f o r t h e d i me n s i o n .
T h e p r o p e r me th o d o f s h o w in g d ime n s io n s a n d to le r a n c e s is
e x p la in e d in S e c tio n 1 . 7 o f A N S I Y 1 4 . 5 M- 1 9 8 2 .
3.2.3.3.
Leaders
L e a d e r s s h a ll b e u s e d to in d ic a te a p a r t o r p o r tio n to w h ic h a
n u mb e r , n o te , o r o th e r r e f e r e n c e a p p lie s a n d s h a ll b e a n u n b r o k e n
l i n e t e r mi n a t i n g i n a n a r r o w h e a d , d o t, o r w a v y l i n e . A r r o w h e a d s
s h o u l d a l w a y s t e r mi n a t e a t a l i n e ; d o t s s h o u l d b e w i t h i n t h e o u t l i n e
o f a n o b j e c t.
3.2.3.4.
Break Lines
S h o r t b r e a k s s h a ll b e in d ic a te d b y s o lid f r e e h a n d lin e s . F o r lo n g
b r e a k s , f u l l r u l e d l i n e s w i t h f r e e h an d z i g z a g s s h a l l b e u s e d . S h a f t s ,
r o d s , tu b e s , e tc . , w h ic h h a v e a p o r tio n o f th e ir le n g th b r o k e n o u t,
s h a ll h a v e th e e n d s o f th e b r e a k d r a w n a s in d ic a te d in F ig u r e 7 o n
page 29.
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Figure 7: Break Lines
3.2.3.5.
Phantom Lines
Phantom lines shall be used to indicate the alternate position of
parts of the item delineated, repeated detail, or the relative position
o f a n a b s e n t p a r t a n d s h a ll b e c omp o s e d o f a lte r n a tin g o n e lo n g a n d
two short dashes, evenly spaced, with a long dash at each end. See
F ig u r e 5 o n p a g e 2 7 , F ig u r e 6 o n p a g e 2 8 , a n d F ig u r e 8 , b e lo w .
Figure 8: Repeated Detail
3.2.3.6.
Sectioning Lines
Sectioning lines shall be used to indicate the exposed surfaces of
a n o b j e c t i n a s e c t i o n a l v ie w . T h e y a r e g e n e r a l l y t h i n f u l l l i n e s ,
b u t ma y v a r y w ith th e k in d o f ma te r ia l s h o w n in s e c tio n .
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3.2.3.7.
Extension Lines
E x t e n s i o n l i n e s a r e u s e d t o i n d i c a te t h e e x t e n s i o n o f a s u r f a c e o r t o
p o in t t o a l o c a t i o n o u ts i d e t h e p a r t o u t l i n e . T h e y s t a r t w i t h a s h o r t ,
v is i b le g a p f r o m t h e o u t l i n e o f t h e p a r t a n d a r e u s u a l l y
p e r p e n d ic u l a r t o t h e i r as s o c i a t e d d i me n s i o n l i n e s .
3.2.3.8.
Hidden Lines
Hidden lines shall consist of short dashes, evenly spaced. These
lin e s a r e u s e d to s h o w th e h id d e n f e a t u r e s o f a p a r t . T h e y s h a l l
a l w a y s b e g in w i t h a d a s h i n c o n ta c t w i t h t h e l i n e f r o m w h i c h t h e y
b e g in , e x c e p t w h e n s u c h a d a s h w o u ld f o r m a c o n tin u a tio n o f a f u ll
l i n e . D a s h e s s h a l l t o u c h a t c o r ne r s , a n d a r c s s h a ll b e g in w ith
d a s h e s o n th e ta n g e n t p o in ts . S e e F ig u r e 5 o n p a g e 2 7 a n d F ig u r e 8
on page 29.
3.2.3.9.
Stitch Lines
S t i t c h l i n e s s h a l l b e u s e d t o i n d ic a t e t h e s t i t c h in g o r s e w i n g l i n e s
o n a n a r tic le a n d s h a ll c o n s is t o f a s e r ie s o f v e r y s h o r t d a s h e s ,
a p p r o x ima te ly h a lf th e le n g th o f d a s h o r h id d e n lin e s , e v e n ly
s p a c e d . L o n g l i n e s o f s t i t c h i n g ma y b e i n d i c a t e d b y a s e r i e s o f
stitch lines connected by phantom lines.
3.2.3.10.
Outlines or Visible Lines
T h e o u t l i n e o r v is i b le l i n e s h a l l b e u s e d f o r a l l l i n e s o n t h e d r a w i n g
r e p r e s e n tin g v is ib le lin e s o n th e o b j e c t; s e e F ig u r e 5 o n p a g e 2 7 .
3.2.3.11.
Datum Lines
D a tu m lin e s s h a ll b e u s e d to in d ic a te th e p o s itio n o f a d a tu m p la n e
a n d s h a ll c o n s is t o f o n e lo n g d a s h a n d tw o s h o r t d a s h e s , e v e n ly
spaced.
3.2.3.12.
Cutting-Plane/Viewing-Plane Lines
The cutting-plane lines shall be used to indicate a plane or planes
in w h ic h a s e c tio n is ta k e n . T h e v ie w in g - p la n e lin e s s h a ll b e u s e d
to indicate the plane or planes from which a surface or surfaces are
v i e w e d . O n s i mp l e v i e w s , t h e c u t t i n g p l a n e s s h a l l b e i n d i c a t e d a s
s h o w n in F ig u r e 9 o n p a g e 3 1 . V ie w s h a ll b e s h o w n in b a c k o f th e
cutting plane (3rd angle).
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Figure 9: Full Sectional View
O n c o mp l e x v i e w s , o r w h e n t h e c u ttin g p la n e s a r e b e n t o r o f f s e t,
th e c u ttin g p la n e s s h a ll b e in d ic a te d a s s h o w n in F ig u r e 1 0 .
Figure 10: Offset Sections
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3.3.
ENGINEERING DRAWING STANDARDS MANUAL
Lettering and Numerals
A ll le tte r in g s h a ll b e u p p e r c a s e ( c a p ita l le tte r s ) . N u mb e r s s h a ll b e A r a b ic
n u me r a l s . T h e l e t t e r i n g a n d n u me r a l s s ha l l a l w y a s b e p l a c e d i n a h o r i z o n t a l
reading position as far as practicable. Other than this, lettering shall be in a
h o r iz o n ta l r e a d in g p o s itio n w h e n th e d r a w in g is r o ta te d 9 0 ° c lo c k w is e . L e g ib le
le tte r in g is e s s e n tia l f o r r e p r o d u c tio n s . L e tte r s a n d /o r n u me r a ls s h a ll n o t r u n
to g e th e r .
W h e n t y p e w r i t t e n l e t t e r s o r d ig i t s a r e u s e d o n d r a w i n g s o r r e l a t e d d a t a , n o th in g
s ma l l e r t h a n p ic a t y p e i s p e r mi t t e d .
3.3.1.
Style
O t h e r t h a n b e i n g u p p e r c a s e R o man a n d p l a c e d i n a h o r i z o n t a l
r e a d in g p o s itio n , th e le tte r in g is th a t o f th e in d iv id u a l's s tyle .
3.3.2.
Heights
L e t t e r i n g h e i g h ts s h a l l b e a s f o l l o w s :
Drawing Feature:
D r a w in g n u mb e r in id e n tif ic a tio n b lo c k s
Drawing title and description of drawing type above L/M
D r a w i n g s u b t i t l e , b o r d e r , l e t t e r s , a n d n u me r a l s
S e c tio n , d e ta il, v ie w , a n d ta b u la tio n le tte r s
D e s c r i p t i o n t i t l e s o f s e c t i o n , d e t a i l , v ie w , n o te s , a n d
ta b u la tio n s
D i me n s i o n s , t o l e r a n c e s , l i mi t s , n o te s , s u b t i t l e s , t a b le s ,
r e v is io n , a n d z o n e le tte r s o n th e f ie ld o f th e d r a w in g
L is t o f ma te r ia ls in f o r ma tio n , n a me b lo c k s , u s e d o n , a n d
next assy
Lettering
h e ig h t in
inches
.25
.25
.19
.25
.19
.16
.14
Note: Use of fit text is not allowed.
3.4.
Scale
D r a w in g s s h a ll b e ma d e to f u ll s c a le u n le s s t h e p a r t s ( o r a s s e mb l y) a r e t o o l a r g e
t o p e r mi t i t o r s o s ma l l a n d c o mp l e x t h a t d r a w i n g t o a n e n l a r g e d s c a l e i s e s s e n t i a l
f o r c l a r i t y . W h e n t h e ma i n v i e w s o f l a r ge p a r t s a r e d r a w n t o a r e d u c e d s c a l e , t h e
d e ta il v ie w s “ ta k e n ” to c la r if y d e ta il s h o u ld b e ma d e to f u ll s c a le w h e n e v e r
p o s s ib le . W h e n th e p a r t h a s b e e n d r a w n to a n e n l a r g e d s c a l e f o r c l a r i t y , i t i s n o t
n e c e s s a r y t o ma k e a n a c t u a l - s i z e v i e w .
a.
T h e s c a l e s p r e f e r r e d f o r e n g i n e e r i n g d r a w in g s a r e f u ll s iz e 1 /1 , r e d u c e d 1 /2 ,
1 /4 , 1 /1 0 , 1 /2 0 , a n d e n la r g e d 2 /1 , 4 /1 , 1 0 /1 , 2 0 /1 . T h e c o mp u te r d a ta b a s e f o r
t h e f o r ma t s i z e s h a l l b e 1 / 1 a t a l l t i me s .
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EXCEPTION:
Ce r ta in d r a w in g s o r f ig u r e s , b y th e ir v e r y n a tu r e , c a n n o t b e d r a w n to a
s p e c i f i c s c a l e ( f o r e x a mp l e , w i r i n g an d s c h e ma tic d ia g r a m d r a w in g s . ) T h e
scale designation for these cases is “NONE.” See “b,” below.
b . T h e s c a l e , a s n o t e d a b o v e , o r t h e w o r d “ N O N E ” mu s t b e e n t e r e d i n t h e T i t l e
b lo c k . D o n o t u s e th e w o r d “ S I Z E ” f o llo w in g th e r a tio . T h e n o ta tio n s “ 1 /4 &
N O T E D ” o r “ 1 /2 & N O T E D , ” e tc . , a p p ly to th o s e d r a w in g s o n w h ic h th e ma in
v ie w s a r e t o a r e d u c e d s c a l e a n d a u x i l i a r y v ie w s a r e t o s o me o th e r s c a l e .
c . T o ma i n t a i n c o n s i s t e n c y w i t h t i t l e b lo c k c a l l o u t f o r s c a l e , d e t a i l v ie w s s h a l l
b e n o te d th u s :
DETAIL
-A
SCALE 1/1
Note:
The scale of the view shall be stated only when it differs from that noted in
t h e T i t l e b lo c k , w h i c h r e p r e s e n t s t h e ma j o r i t y o f v ie w s a n d s e c t i o n s .
d . O r ig in a l p e n c il d r a w in g s s h o u ld b e to s c a le w ith in 0 . 0 3 in c h . W h e n c h a n g e s
to an existing drawing take place, it is required to indicate that a particular
f e a tu r e is n o t to s c a le b y u n d e r lin in g th e d ime n s io n s w ith a s tr a ig h t lin e .
e.
3.5.
T h e g e o me tr y o f CA D - p r o d u c e d d r a w in g s s h a ll b e e n te r e d in to th e e le c tr o n ic
d a ta b a s e a t o n e - to - o n e ( f u ll) s c a le .
Positioning the Part on the Drawing
I n s ta lla tio n s s h a ll u s u a lly b e p o s itio n e d o n th e d r a w in g a s th e y w o u ld b e s e e n
w h e n v ie w e d f r o m th e le f t s id e o r to p s id e o f th e e q u ip me n t w ith its f o r w a r d e n d
p o in t i n g t o t h e l e f t .
I f c la r ity c a n b e g r e a tly imp r o v e d b y a p o s itio n th a t r e s u lts in f e w e r h id d e n lin e s
a n d f o r e s h o r te n e d p r o j e c tio n s , th e n th a t p o s itio n s h o u ld b e u s e d , a n d th e a b o v e
r u le s h o u ld b e d is r e g a r d e d . S u c h in s ta n c e s w o u ld b e a d o o r o r d o o r j a mb w h ic h
in s ta lls o n th e r ig h t s id e b e in g d r a w n w ith th e f o r w a r d p o r tio n to th e r ig h t, o r a
n u mb e r o f ite ms in s ta lle d o n th e f o r w a r d s id e o f a p a n e l b e in g d r a w n lo o k in g a t
the forward side.
P a r ts a n d min o r a s s e mb lie s a r e n o t n e c e s s a r ily d r a w n in th e p o s itio n th e y a s s u me
i n t h e e q u i p me n t . T h e y ma y b e d r a w n wi t h s o me s u r f a c e , s i d e , o r r e f e r e n c e l i n e
p a r a lle l o r p e r p e n d ic u la r to th e lo w e r b o r d e r o f th e d r a w in g . L a th e - tu r n e d p a r ts
a r e u s u a l l y d r a w n w i t h t h e l ar g e r d i a me t e r s t o t h e l e f t .
3.5.1.
Picturization
U n n e c e s s a r y d e t a i l s h a l l b e o mi t t e d f r o m a l l v ie w s a n d s e c t i o n s i f
c l a r i t y i s n o t s a c r i f i c e d a n d i f d r a f t i n g t i me i s r e d u c e d . S e e F i g u r e
11 on page 34.
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ENGINEERING DRAWING STANDARDS MANUAL
Figure 11: Details of Auxiliary
3.5.2.
Sections
a.
A s e c tio n a l v ie w s h a ll b e ma d e th r o u g h a n o u ts id e v ie w a n d n o t
th r o u g h a n o th e r s e c tio n a l v ie w . S e e F ig u r e 1 2 o n p a g e 3 5 .
b . T h e lo c a tio n o f a s e c tio n is i n d i c a t e d b y a c u t t i n g p l a n e w i t h
r e f e r e n c e le tte r s a n d a r r o w h e a d s s h o w in g th e d ir e c tio n in w h ic h
the section is viewed.
c.
S e c tio n a l v ie w s s h a ll n o t p r o j e c t d i r e c t l y a h e a d o f t h e c u t t i n g p la n e a r r o w h e a d s a n d s h o u ld b e a s n e a r a s p r a c tic a b le to th e
p o r tio n s o f th e d r a w in g th a t th e y c la r if y.
d . T h e a x e s o f s e c tio n a l v ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , th e
c u ttin g p la n e ma y v a r y in d ir e c tio n ( s e e F ig u r e 1 2 ) . I f v ie w s
h a v e to b e r o ta te d , th e a n g le a n d d ir e c tio n o f r o ta tio n mu s t b e
g iv e n .
e.
Visible and invisible outlines beyond the cutting plane should
n o t b e s h o w n u n le s s n e c e s s a r y f o r c la r if ic a tio n .
f.
S h a f ts , b o lts , n u ts , e tc . , w h ic h a r e in a c u ttin g p la n e s h o u ld n o t
b e c r o s s - h a tc h e d .
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35
NOT RECOMMENDED
SECTION ROTATED
XX° CW
A
INCORRECT PROJECTION
WRONG SIDE OF CUTTING
PLANE
NOT ACCEPTABLE
A
CORRECT BUT NOT IN
LINE OF PROJECTION
SECTION
A-A
CORRECT BUT NOT IN
LINE OF PROJECTION
Figure 12: Designation and Positioning of Sectional Views
g . T h e c r o s s - h a tc h in g s ymb o l f o r c a s t ir o n s h o u ld b e u s e d
r e g a r d le s s o f ma te r ia l a s s h o w n in F ig u r e 1 3 . I f e s s e n tia l f o r
c la r ity, ma te r ia l f r o m w h ic h th e p a r ts a r e ma d e s h o u ld b e
in d ic a te d b y th e c o n v e n tio n s g iv e n in A N S I Y 1 4 . 2 M- 1 9 7 9 .
CAST OR MALLEABLE
IRON AND GENERAL USE
FOR ALL MATERIALS
Figure 13: Conventions for Material
h . W h e n s e c t i o n s a r e r e mo t e l y l oc a t e d , z o n e i n f o r ma t i o n s h a l l b e
a d d e d to b o th lo c a tio n s ( i. e . , f r o m w h e r e th e s e c tio n is ta k e n
and to the location where the section is shown).
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ENGINEERING DRAWING STANDARDS MANUAL
3.5.3.
Views
A v i e w i s u s e d t o e n l a r g e o r c l a rif y a p o r tio n o f th e d r a w in g . S e e
F ig u r e 1 4 .
A
D
5A
SH3
A
A
A-A
SEE VIEW
1D
SH1
SCALE 2/1
(TITLE BLOCK
NOT SHOWN)
1
5
Figure 14: Clarification of a Portion of a Drawing
a.
P r o j e c te d v ie w s w h ic h a r e s h o w n a lo n g c o mmo n c e n te r lin e s to
t h e i r o r i g i n n e e d n o t b e i d e n t i f i e d . V i e w s l o c a t e d d ir e c t l y
a h e a d o f v i e w i n g p l a n e a r r o w h e a d s a r e a b s o l u t e l y p r o h ib i t e d .
b . “ T r a n s p o r te d ” v ie w s o r s e c tio n s a r e th o s e w h ic h a r e n o t d ir e c t
p r o j e c tio n s . T h e y mu s t b e id e n tif ie d w h e r e s h o w n , b y le tte r s ,
a n d a t t h e i r o r i g i n b y t h e c u t t i n g p la n e l i n e s a n d l e t t e r s .
c.
V ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , if v ie w s h a v e to b e
r o t a t e d f o r a l e g i t i ma t e r e a s o n , t h e a n g le a n d d ir e c t i o n o f
r o ta tio n mu s t b e g iv e n .
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3.5.4.
37
Details
A d e ta il is a p a r tia l v ie w w h ic h s h o w s a p o r tio n o f a n o th e r v ie w in
t h e s a me p la n e a n d w i l l u s u a l l y d e p ic t g r e a t e r d e t a i l . D e t a i l s
s h o u ld n o t b e r o ta te d . S e e F ig u r e 1 5 .
DETAIL
A
SCALE 4/1
SEE DETAIL
A
Figure 15: Identification of Details
3.5.5.
Identification of Sections, Views, and Details
a.
I d e n tif yin g le tte r s f o r s e c tio n s , v ie w s , a n d d e ta ils a r e a s s ig n e d
in a lp h a b e tic a l s e q u e n c e a s f o llo w s : F o r s e c tio n s a n d s u c h
v ie w s a s “ A - A ” in F ig u r e 1 4 o n p a g e 3 6 , u s e h yp h e n a te d le tte r s .
A f te r “ Z - Z , ” b e g in : “A A - A A , ” “ A B - A B , ” e t c .
b . F o r e n c ir c le d d e ta ils s u c h a s d e ta il “ A ” in F ig u r e 1 5 , u s e s in g le
letters. After “Z,” begin: “AA,” “AB,” etc.
c.
The letters “I,” “O,” “Q,” and “X,” either as a single letter or as
d o u b le - le tte r e n tr ie s , s h a ll n o t b e u s e d . A d e s ig n a te d le tte r o r
c o mb in a tio n o f le tte r s o n a r e le a s e d d r a w in g s h a ll n o t b e u s e d
f o r a n o th e r s e c tio n , v ie w , o r d e ta il o n th e s a me d r a w in g .
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ENGINEERING DRAWING STANDARDS MANUAL
3.5.6.
Locating Sections, Views, and Details
O n z o n e d a n d /o r mu l t i s h e e t d r a w i n g s , a v ie w , s e c t i o n , o r d e t a i l a n d
t h e p o r t i o n o f t h e d r a w i n g i t c l a r i f i es s h a l l b e c r o s s - r e f e r e n c e d a s
follows:
Reference on Original Drawing to
View on Clarifying Sheet
SEE VIEW
A-A
5A
SH3
Reference at View on Clarifying
Sheet to Original Drawing
VIEW
A-A
SCALE 4/1
1D
SH1
N o te : Z o n e b lo c k s iz e is 1 /2 - in c h s q u a r e .
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ENGINEERING DRAWING STANDARDS MANUAL
4.
TYPES OF DRAWINGS
4.1.
Altered or Selected Vendor Part Drawing
A lte r e d v e n d o r p a r t o r s e le c te d v e n d o r p a r t d r a w in g s s h a ll b e p r e p a r e d o n G S F C
f o r ma t w h e n a n e x is tin g v e n d o r p a r t c a n n o t b e u s e d a s is a n d it is d e s ir e d to
d o c u me n t a n d c o n tr o l th e a lte r a tio n o r s e le ctio n o f th e p a r t. P r e p a r a tio n s h a ll n o t
b e i n i t i a t e d u n t i l t h e v e n d o r h a s b e e n r eq u e s t e d t o ma k e t h e a l t e r a t i o n o r
s e le c tio n , s u p p ly h is n u mb e r , a n d s u p p ly d o c u me n ta tio n . W h e n th e d r a w in g is
p r e p a r e d b y G S F C, it s h a ll s p e c if y th e p a r t to b e a lte r e d o r s e le c te d b y v e n d o r
n u mb e r , n a me , a n d a d d r e s s a n d s h a ll c o mp le te ly d e lin e a te th e a lte r a tio n o r
selection. In addition, the drawing shall specify reidentification of the part by
th e G S F C p a r t n u mb e r . A n a lte r e d o r s e le c te d v e n d o r p a r t d r a w in g s h a ll b e
id e n tif ie d b y th e w o r d s “ A lte r e d V e n d o r P a r t D r a w in g ” imme d ia te ly a b o v e th e
T i t l e b lo c k . S e e F i g u r e 1 6 .
REVISION
1.
DESCRIPTION
SYM
NOTES: UNLESS OTHERWISE SPECIFIED
DATE
APPROVAL
ALTERED PART SOURCE INFORMATION;
PART NO: 118-R-0715 RELAY
VENDOR; LEACH CORP.
ADDRESS; LOS ANGELES, CALIF.
2.
INK STAMP PART NUMBER
PER ..........
SUGESTED SOURCE OF SUPPLY (INK)
...............
...............
...............
ø
.218
+ .006
- .000
-1 HOLE
ENLARGE EXISTING
ø
.166 HOLE
FOLD
REV
LINE
AT THIS LOCATION ONLY
GC
ALTERED VENDOR PART DRAWING
SEE NOTE 2
(REIDENTIFY THE
PART TO GSFC PART
REQ'D
ITEM
REQ'D
DESCRIPTION
PART NO.
NO.
NUMBER GCXXXXXXX.)
MATERIAL
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
FILE NAME:
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
NEXT ASSY
Figure 16: Sample Altered or Selected Vendor Part Drawing
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4.2.
ENGINEERING DRAWING STANDARDS MANUAL
Assembly Drawing
A n a s s e mb ly d r a w in g s h o w s tw o o r mo r e s e p a r a b le p a r ts j o in e d to f o r m a
s to c k a b le ite m, o r a g r o u p o f a s s e mb lie s r e q u ir e d to f o r m a n a s s e mb ly o f h ig h e r
o r d e r . F ig u r e 1 7 s h o w s a n e x a mp le o f a n a s s e mb ly d r a w in g w h e n a s e p a r a te p a r ts
lis t is r e q u ir e d . F ig u r e 3 4 , “ A s s e mb ly D r a w in g W ith L is t o f Ma te r ia l, ” o n
p a g e 8 0 , s h o w s a n a s s e mb ly d r a w in g w ith th e L is t o f Ma te r ia l o n th e d r a w in g .
Re f e r a ls o to S e c tio n 5 . 1 , “ P a r t N u mb e r in g , ” o n p a g e 6 1 .
REVISION
DESCRIPTION
SYM
1
GXXXXXX5
DATE
APPROVAL
GXXXXXX1
7
MS15795-305
8
MS35649-63
2
2X
9
MS35234-17
10
MS15795-305
11
MS35649-44
2X
GXXXXXX6
4
GXXXXXX3
5
GXXXXXX4
FOLD
3
REV
4X
LINE
2X
2X
GXXXXXX2
GC
6
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 17: Sample Assembly Drawing
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ENGINEERING DRAWING STANDARDS MANUAL
4.3.
Detail Drawing
A d e t a i l d r a w i n g s h o w s a l l t h e i n f o r ma t i o n n e c e s s a r y f o r f a b r i c a t i n g a n i t e m,
in c lu d in g th e ma te r ia l f r o m w h ic h it is ma d e a n d th o s e f in is h e s , p r o te c tiv e
c o a tin g s , a n d p r o c e s s e s r e q u ir e d to f a b ric a te th e e n d p r o d u c t. O n ly o n e ite m
( d e ta il p a r t) s h a ll b e p r e s e n te d p e r d r a w in g . S e e F ig u r e 1 8 .
REVISION
DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED
1.
IRIDITE IN ACCORDANCE WITH
MIL-C-5541. CLASS1A.
2
RUBBER STAMP .125 HIGH CHARACTERS
AS SHOWN USING ____________.
ORIGINAL SOURCE OF SUPPLY:
_________
INSERT COMPLETE
ADDRESS
_________
O .500
REV
FOLD
.750
LINE
1.500
1.000
1.120
BAR
REQ'D
ITEM
REQ'D
AL ALY
PART NO.
QQ-A-225/8 6061-T6
MATERIAL
DESCRIPTION
NO.
GC
2.250
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTME-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTME-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 18: Sample Detail Drawing
I n th e c a s e o f in s e p a r a b le p a r ts ( s u c h a s th o s e th a t a r e w e ld e d , r iv e te d , b o n d e d , o r
b r a z e d , e t c . ) w h i c h f o r m a n i n t e g r a l u n i t ( p a r t ) n o t c a p a b l e o f b e i n g d i s a s s e mb l e d
f o r r e p l a c e me n t , r e f e r t o p a r a g r a p h 4 . 6 e n t i t l e d “ I n s e p a r a b l e A s s e mb l y D r a w i n g ”
on page 44.
M u l t i d e t a i l d r a w i n g s a r e n o t a l l o w e d . T h e G S F C r e q u ir e s a u n iq u e d r a w i n g
n u mb e r p e r p a r t s o t h a t e a c h p a r t c a n b e i n d i v i d u a l l y e s t i ma t e d b y f a b r i c a t o r s a n d
id e n tif ie d f o r in s p e c tio n a n d c o n f ig u r a tio n tr a c k in g .
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ENGINEERING DRAWING STANDARDS MANUAL
4.4.
Drawing Tree
A d r a w i n g t r e e i s u s e d t o c o n t r o l t h e d ev e l o p me n t o f d r a w i n g s a n d t h e i r p l a c e i n
th e o v e r a ll s c h e me o f th e p r o j e c t. A lth o u g h th is typ e d r a w in g is n o t a
r e q u i r e me n t f o r e a c h p r o j e c t , w h e n u s e d p ro p e r l y a n d k e p t u p t o d a t e , i t c a n b e a
v a lu a b le ma n a g e me n t a id a n d c a n b e co n ta in e d in a c o n f ig u r a tio n ma n a g e me n t
d a ta b a s e . S e e F ig u r e 1 9 .
TOP ASSY
CONFIGURATION DWG
GE XXXXXXX
PAYLOAD
ELECTRICAL
4,5
C
GJ 2450200
CONTROL DWGS
*
-
GROUND HANDLING
INSTALLATION
DRAWINGS
INTERFACE
MODULE-A
GJ 2456000
-
-
GJ 2452100
EQUIPMENT
GE 2450300
A
-
SOLAR ARRAY BATTERY
AVIONI CS ASSY
GF 2456050
INSTALLATION
A
TBD
ENCODER BOX
GE 2456042
GE 2452200
UV SENSOR INSTL
-
GD 2452250
BRACKET, CONNECTOR
GD 2456070
-
FRAME, WELDING
GE 2450350
-
GE 2450351
TYPICAL SYMBOL LIST
1
-
AUTOCAD DRAWING
*
**
BRACKET, DUAL
**
GD 2456789
7
D
DOLLY ASSY
GJ 2450330
STAND, MOUNTI NG
-
DUAL BRACKET ASSY
GE 2456010
2
-
LIFTING FIXTURE
GE 2450360
A
DRAWING SIZE
DRAWING NUMBER PRE-ASSIGNED
CABLE, HOIST
DRAWING NUMBER
-
MULTI-USE DRAWING
-
TBD
GD 2450365
-
DRAWING REVISION LETTER
LIST OUTSTANDING EO NOS.
DUAL HINGE
3
C
SLI NG
TO BE DETERMINED
GE 2456290
GF 24550362
-
WASHER
SPRING, EXTERNAL
GC 2456273
GC 2450424
B
SPRING, DETENT
GC 2456272
Figure 19: Sample Drawing Tree
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
4.5.
43
Electrical/Electronic Drawings
E l e c t r i c a l / e l e c t r o n i c d r a w i n g s a r e p r e p a r e d to d e p ic t s c h e ma tic s , w ir in g d ia g r a ms ,
c a b l e i n t e r c o n n e c t i o n s , a n d d e t a i l e d c a b l e a s s e mb l y d r a w i n g s .
4.5.1.
Electrical and Electronic Symbols
A p p l i c a t i o n : S y mb o l s s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 3 2 . 2 1 9 7 5 , G r a p h ic S y m b o ls fo r E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r
la te r r e v is io n s ) , u n le s s o th e r w is e n o te d .
G r a p h i c e l e c t r i c a l w i r in g s y mb o l s f o r a r c h i t e c tu r a l a n d e l e c t r i c a l
la yo u t d r a w in g s s h a ll c o n f o r m to A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic
S y m b o ls fo r E le c tr ic a l W ir in g a n d L a y o u t D ia g r a m s U s e d in
A r c h ite c tu r e a n d B u ild in g Co n s tr u c tio n ( o r l a t e r r e v i s i o n s ) .
4.5.2.
Electrical and Electronic Diagrams
A p p l i c a t i o n : D i a g r a ms s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 1 4 . 1 5 1 9 6 6 ( R- 7 3 ) E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r l a t e r
r e v is io n s ) ; A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a m s,
s u b s e c tio n 1 5 - 1 1 ; A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s
D ia g r a m s , s u b s e c tio n s 1 5 - 1 th r o u g h 1 5 - 1 0 , a n d 1 5 - 1 2 .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
44
ENGINEERING DRAWING STANDARDS MANUAL
4.6.
Inseparable Assembly Drawing
A n i n s e p a r a b l e a s s e mb l y d r a w i n g d e l i n e a te s i t e ms ( p i e c e s ) w h i c h a r e s e p a r a t e l y
f a b r i c a t e d a n d a r e p e r ma n e n t l y j o i n e d t o g e t h e r ( e . g . , w e l d e d , b r a z e d , r i v e t e d ,
n a ile d , b o n d e d , e tc . ) to f o r m a n in te g r a l u n it ( p a r t) n o t c a p a b le o f b e in g r e a d ily
d is a s s e mb le d . A n in s e p a r a b le a s s e mb ly d r a w in g ma y b e p r e p a r e d in lie u o f
in d iv id u a l mo n o d e ta il d r a w in g s f o r in s ep a r a b le a s s e mb lie s in te n d e d to b e
procured and replaced as a unit, where (except for standard hardware) the
s e p a r a t e p a r t s a r e o f s i mi l a r o r c o mp a t i b l e ma t e r i a l s . S e e F i g u r e 2 0 ( a l l d a t a ,
s u c h a s n o te s a n d lis t o f ma te r ia l, a r e n o t s h o w n ) .
REVISION
DESCRIPTION
SYM
2X
DATE
APPROVAL
.006
ø .125+
- .000
.063
4.000
.063
.250
3.500
R .125
1.000
1.250
.875
.250 TYP
1.960
.750
.063
2
MS33588-X
3
MS20426-X
FOLD
1
GC
REV
GXXXXXX2
LINE
1.000
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 20: Sample Inseparable Assembly Drawing
A n in s e p a r a b le a s s e mb ly d r a w in g s h a ll f u lly d e f in e th e e n d p r o d u c t o r d e ta il
a s s e mb l y a s a s s e mb l e d . P i e c e s o f t h e i ns e p a r a b l e a s s e mb l y ma y b e d e t a i l e d e i t h e r
o n s e p a r a te d e ta il d r a w in g s o r o n th e in s e p a r a b le a s s e mb ly d r a w in g its e lf . I n th e
c a s e o f w e ld me n ts , th e p a r ts s h a ll n o t b e in d iv id u a lly d e ta ile d o n s e p a r a te
d r a w in g s ( d u e to th e c o n s u ma b le ma te r ia l a llo w a n c e s th a t w o u ld h a v e to b e s h o w n
o n d e t a i l d r a w i n g s ) , e x c e p t i n c a s e s w h e r e e x t e n s i v e ma c h i n i n g mig h t b e
necessary.
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
45
ENGINEERING DRAWING STANDARDS MANUAL
4.7.
Installation Assembly Drawing
A n in s ta lla tio n a s s e mb ly d r a w in g s h o w s w h e r e a n d h o w p a r ts a n d /o r a s s e mb lie s
a r e in s ta lle d r e la tiv e to s u p p o r tin g s tr u c tu r e o r a s s o c ia te d ite ms . I t s h o w s
lo c a tin g d ime n s io n s , to le r a n c in g , s p e c if ie s a tta c h in g p a r ts ( s u c h a s r iv e ts , b o lts ,
o r s c r e w s ) a n d s p e c i f i c a d j u s t me n t s , a s s e mb l y i n s t r u c t i o n s , a n d p r o c e s s e s
r e q u ir e d f o r c o mp le tin g a n d in s p e c tin g th e in s ta lla tio n . F ig u r e 2 1 s h o w s a n
e x a mp le w h e n a s e p a r a te p a r ts lis t is r e q u ir e d .
REVISION
DESCRIPTION
SYM
DATE
APPROVAL
(GXXXXXX9)
ø
.250
+ .004
- .000
1
4
GXXXXXX2
5
GXXXXXX3
GXXXXXX1
(PEEN ENDS)
ø 4.300
1.812
GXXXXXX4
6
ø
6.000
7
2X
ø .500
GXXXXXX8
2
8
2.500
GXXXXXX5
GXXXXXX6
FOLD
GXXXXX12
GXXXXX13
10
11
GXXXXX10
GXXXXX11
REV
9
LINE
1.380
3
1.000
.625
GC
1.150
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 21: Sample Installation Assembly Drawing
a. That portion of the structure into which the installation is being installed shall
b e s h o w n in p h a n to m a n d id e n tif ie d b y its p a r t n u mb e r . S u c h id e n tif ic a tio n s
s h a ll b e in d ic a te d a s r e f e r e n c e in f o r ma tio n b y e n c lo s u r e o f th e p a r t n u mb e r in
p a r e n th e s e s o r b y u s e o f th e s ymb o l “ RE F . ”
b . A p p lic a b le d a tu m p o in ts o r p la n e s , s u c h a s c e n t e r l i n e s o f s t r u c t u r e , p l a n e o f
s ymme tr y, s ta tio n p la n e s , e tc . , s h a ll b e s h o w n a n d id e n tif ie d .
c.
P a r t s ma y b e d e t a i l e d i n p l a c e o n i ns t a l l a t i o n d r a w i n g s w h e n c o n v e n i e n t .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
46
ENGINEERING DRAWING STANDARDS MANUAL
4.8.
Interface Control Drawing
A n i n t e r f a c e c o n t r o l d r a w i n g s h a l l b e u s e d t o ma i n t a i n c o mp a t i b i l i t y o f a l l
p h ys i c a l a n d f u n c t i o n a l d e s i g n s b e t w e e n d if f e r e n t e n g in e e r i n g d e s i g n a c t i v i t i e s .
T h e d r a w in g s h a ll c o mmu n ic a te d e s ig n c r ite r ia s u c h a s d ime n s io n s , h o le a n d /o r
b o l t s i z e s , h a r d w a r e , a n d u l t i ma t e c h a n g e s r e l a t i v e t o c o f u n c t i o n in g s y s t e ms .
“Interface Control Drawing” shall be added directly above the Title block. No
l i s t o f ma t e r i a l s i s p e r mi t t e d o n t h i s t y p e o f d r a w i n g ; i t i s n o t t o b e u s e d t o
ma n u f a c tu r e p a r ts . S e e F ig u r e s 2 2 a , b e lo w , a n d 2 2 b o n p a g e 4 8 .
REVISION
DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED
1
2
SUPPLIED BY XZ CORP.
12 WATERLANE
BOSS, CT 06132
12 x ø.281±
ø.007
THIS DRAWING IS NOT TO
.004
.000
23.250
M A B C
BE USED FOR FABRICATION
OR INSPECTION.
15.500
7.750
+Y
.375
3.000
1.500
-B6.000
12.000
FOLD
A-A
REV
SECTION
LINE
9.000
24.000
-C+Y
CONTROL BOX #5
23°-30'
+Z
GC
INTERFACE CONTROL DRAWING
7.000
REQ'D
ITEM
REQ'D
PART NO.
NATIONAL AERONAUTICS AND
TOLERANCES:
A
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
REF
GREENBELT, MARYLAND
DATE
DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER
PLATFORM #5
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
A
MATERIAL
DESCRIPTION
NO.
-A-
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
1
HARDNESS TEST NOT REQUIRED
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
VIEWLOOKING OUTBOARD
DRAWN
TITLE
NON FLIGHT
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 22a: Sample Interface Control Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
43.526
17.375
49.013
46.83
7.00
AND ROLLERS
4.00 FOR PALLET
WL 140.00 C5A
75.914
Z414
4.00
POINT
C5A SHIPPING
1.0
UAR IN
FILE NAME:
VERSION:
POSITION
THIS DRAWING WAS PRODUCED USING
SOFTWARE:
AXIS
48.00
36.361
MMS
TURNOVER
TURNOVER
31.839
Z 414
55.162
CONFIGURATION
47.902
2.072
HINGE
Z 300.76 REF
1.5
MPF
ATTEN. FR.
9.562
11.17
5.00
Z 400
9.388 ADAPTER
6.93 SPACER
COVERS
INCLUDING
68.524
WL 302.00 C5A
AND REMOVE FOR SHIPPING.
REQD
REQD
PART NO.
52.914
LOAD
±.005
±.02
±1°
±1/16
FRACTIONS
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
NEXT ASSY
NDE REQUIRED PER S-313-009 CODE
USED ON
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
ON FIELD OF DRAWING THUS
16.17
125
NON FLIGHT
/POST FAB HARDNESS TEST REQ'D
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HARDNESS TEST NOT REQUIRED
FLIGHT HARDWARE
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
.XXX
.XX
TOLERANCES:
4.39
REVISION
SIDE VIEW
DESCRIPTION
DESCRIPTION
APPROVED-ENGINEER
APPROVED-STRESS
APPROVED
APPROVED
CHECKED
DRAWN
DESIGNER
NAME
SPACE ADMINISTRATION
NATIONAL AERONAUTICS AND
INIT
LIST OF MATERIAL
DATE
CODE
GC
TITLE
SCALE
APPROVAL
WT
SH
REV
GREENBELT, MARYLAND
MATERIAL SPEC & NO.
STRUT
SUPPORT
REMOVABLE
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
Goddard Space Flight Center
MATERIAL
102.314 FOR STATIC SUPPORT ON POSTS
105.314 FOR TURNOVER EQUIPMENT INSTALLATION
104.314 FOR TURNOVER MOTION (SHOWN)
SYM
INTERFACE CONTROL DRAWING
NOTE 1
46.83
SPACER
SLOTTED
JACK
CELL
COVER
TRUNNION
1.00
Ø190.00
R 101.431
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NO.
ITEM
69.75
65.239
FOLD
SUPPORT POSTS FOLD AWAY FOR TURNOVER
LINE
X-673-64-1F REV 001 DEC. ‘94
LINE
FOLD
GC
1.
NOTES: UNLESS OTHERWISE SPECIFIED
ENGINEERING DRAWING STANDARDS MANUAL
47
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
REV
48
ENGINEERING DRAWING STANDARDS MANUAL
Figure 22b: Sample Interface Control Drawing
Note: Format is too small. No information should appear beneath revision block
or above list of material. Choose a larger format in this case.
4.9.
Matched-Set Drawing
A ma tc h e d - s e t d r a w in g d e p ic ts p a r ts th a t a r e ma c h in e - ma tc h e d o r o th e r w is e ma te d
a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s e s s e n t i a l . T h e o p e r a t i n g o r
ma t i n g c h a r a c t e r i s t i c s o f t h e ma t c h e d p a r ts ( s e t ) s h a l l b e i n d i c a t e d . T h e p a r t s
s h a ll b e u n iq u e ly ma r k e d w ith a s e r ia l n u mb e r id e n tif ic a tio n to in d ic a te a ma tc h e d
s e t. S e e F ig u r e 2 3 ( a ll d a ta r e q u ir e d f o r th e f in is h e d d r a w in g a r e n o t s h o w n ) .
T h e d r a w i n g t i t l e b e c o me s a n a s s e mb l y, a l t h o u g h t h e p a r t s a r e n o t a c t u a l l y
a t t a c h e d . “ M a i n t a i n a n d F u r nis h O n ly A s A Ma tc h e d S e t” s h a ll b e a d d e d d ir e c tly
above the Title block or List of Material.
REVISION
DESCRIPTION
SYM
APPROVAL
GXXXXXX1
2
GXXXXXX2
GXXXXXX3
REV
FOLD
3
LINE
1
DATE
LAP .00008 TO .00015
DIAMETRAL CLEARANCE
GC
MAINTAIN AND FURNISH ONLY AS A MATCHED SET
REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 23: Sample Matched-Set Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
4.10.
49
Mechanical Schematic
A me c h a n i c a l s c h e ma t i c d ia g r a m d r a w i n g i l l u s t r a t e s t h e o p e r a t i o n a l s e q u e n c e o r
a r r a n g e me n t o f a me c h a n ic a l d e v ic e . D ime n s io n s a n d r e la tiv e s iz e s o f ite ms ma y
b e s h o w n to in d ic a te me c h a n ic a l r e la tio n s h ip . S e e F ig u r e 2 4 .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
RANGE SCALE
SUPER-
44T
32P
26T
32P
44T
88T
24T
64P
51T
GEAR SEGMENT 66T
72T
32P
ELEVATION
DIFFERENTIAL
MST
66P
34T
64P
DEFLECTION
MIRROR
VERTICAL
ALL GEARS 46P.
ENTRY
66T
66T
21T
60T
64P
QUADRUPLE
32P
36T
24T
65L0G 8R
46
32P
20T
72T
20T
180T
LOCK
LINE
44T
(SPIDER)
102T
24T
105T
32P
6
FILE NAME:
SOFTWARE:
L08 8R
COUPLING
72T
90T
VERSION:
5
25
REQ'D
REQ'D
PART NO.
.005
.02
.1
.1/16
FRACTIONS
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
NEXT ASSY
NDE REQUIRED PER S-313-009 CODE
USED ON
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
ON FIELD OF DRAWING THUS
125
NON FLIGHT
/POST FAB HARDNESS TEST REQ'D
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HARDNESS TEST NOT REQUIRED
FLIGHT HARDWARE
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
.XXX
.XX
TOLERANCES:
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NO.
ITEM
RANGE KNOB
(2065 REVS .005)
AZIMUTH BOMBSIGHT KNOB
(6MLS/REV) 150REV
BAL CORR KNOB
(80REVS-.005)
L0G8R
STOP
ELEVATION BOMBSIGHT KNOB
(6ML/REV)
COUPLING
LOCK
LINE
72T
20T
135T
27T
THD RH
DOUBLE
24TRI
COMPENSATOR
AMMUNITION SELECTION KNOB
(91 REVS .005)
53T
62T
21T
32P
72T
72T
25
64T
45T
GEARS
L08 R
36T
24T
27T
THIS DRAWING WAS PRODUCED USING
TRANSMITTER
90T
32P
BALLISTIC
CORRECTION
DIFFERRENTIAL
53T
32P
BALLISTIC CAM
REVERSE
CAM
DOUBLE
24TPI RH
24TPI LH
INCREASE IN SUPERELEVATION.
ALL DIRECTIONAL ARROWS INDICATE
GUN LAYING RETICLE
2.
1.
FOLD
NOTES: UNLESS OTHERWISE SPECIFIED
LINE
X-673-64-1F REV 001 DEC. ‘94
DESCRIPTION
APPROVED-ENGINEER
APPROVED-STRESS
APPROVED
APPROVED
CHECKED
DRAWN
DESIGNER
NAME
SPACE ADMINISTRATION
NATIONAL AERONAUTICS AND
INIT
LIST OF MATERIAL
SYM
REVISION
DATE
CODE
GC
TITLE
SCALE
WT
APPROVAL
SH
REV
GREENBELT, MARYLAND
MATERIAL SPEC & NO.
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
Goddard Space Flight Center
MATERIAL
DESCRIPTION
REV
LINE
FOLD
GC
50
ENGINEERING DRAWING STANDARDS MANUAL
Figure 24: Sample Mechanical Schematic
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
51
ENGINEERING DRAWING STANDARDS MANUAL
4.11.
Modification Drawing
Mo d if ic a tio n d r a w in g s d e lin e a te c h a n g e s to d e liv e r e d ite ms , s to c k a b le ite ms ( e . g . ,
S ta n d a r d P a r t D r a w in g o f h o n e yc o mb p a n e l b la n k s ) , a s s e mb lie s , in s ta lla tio n s , o r
s ys te ms . D r a w in g s a r e p r e p a r e d to a d d , r e mo v e , o r r e w o r k ite ms , e q u ip me n t
i n s t a l l a t i o n s , o r s y s t e ms t o s a t i s f y t h e u s i n g a c t i v i t y ' s r e q u ir e me n ts . T h e y a l s o
i n c o r p o r a t e ma n d a t o r y c h a n g e s ( e . g . , s a f e t y , r e l i a b i l i t y , o r a p p l i c a t i o n e x t e n s i o n )
in d e liv e r e d e q u ip me n t. A mo d if ic a tio n d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s
“ M o d i f i c a t i o n D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o ck . T h i s t y p e o f d r a w i n g
h a s a ls o b e e n k n o w n o r r e f e r r e d to a s a “ Ma k e F r o m D r a w in g . ”
4.12.
Outline Drawing
A n o u t l i n e d r a w i n g i s a d r a w i n g t h a t d e f i n e s t h e e x t e r n a l c o n to u r o f a n i t e m,
u s u a lly b y s h o w in g th e p r o j e c te d v ie w s in tw o o r th r e e p e r p e n d ic u la r p la n e s .
T w o t y p e s o f o u t l i n e d r a w i n g s a r e d e p ic t e d i n F i g u r e s 2 5 a , b e l o w , a n d 2 5 b o n
page 52.
15MMAXIMUM
SPACECRAFT AND TELESCOPE
APPROX 3M
PAM-A
3M
SECTION
SOLAR ARRAY STOWED
ATTITUDE CONTROL
THRUSTERS
STAR TRACKER
DATA ANTENNA
DATA ANTENNA
APOGEE ROCKET
MOTORS
SUN SHADE SHOWN STOWED
APPROX 1M DIA
TELESCOPE
OUTLINE OF SHUTTLE
PAYLOAD ENVELOPE
STOWED IN SHUTTLE BAY FOR PAM-A LAUNCH
Figure 25a: First Sample Outline Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
52
ENGINEERING DRAWING STANDARDS MANUAL
SHUTTLE TRANSPORTATION SYSTEM
COBE
SATELLITE
PAYLOAD
INSTALLATION
+Z Looking out of
the plane of paper
576.00
584.00
207.06
186.00
SOLAR ARRAY PANELS
760.50
-Y
+Y
943.50
96.68
217.22
1069.00
SPACECRAFT LENGTH
1108.33
1123.50
1305.50
1307.00
+X Looking aft
Figure 25b: Second Sample Outline Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
53
ENGINEERING DRAWING STANDARDS MANUAL
4.13.
Source Control Drawing
A s o u r c e c o n tr o l d r a w in g s h a ll b e u s e d to limit p r o c u r e me n t o f a v e n d o r - d e s ig n e d
a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) to th a t s o u r c e o r s o u r c e s t h a t e x c l u s i v e l y
p r o v id e th e p e r f o r ma n c e , in s ta lla tio n , a n d i n t e r c h a n g e a b l e c h a r a c t e r i s t i c s o f t h e
p a r t s e le c te d a n d te s te d f o r a s p e c if ic a p p lic a tio n . I n th e e v e n t th e v e n d o r s h a ll
n o t p r o v id e d r a w in g s a s d e s c r ib e d in p a r a g r a p h 4 . 1 4 . d o n p a g e 5 6 , th e s o u r c e
c o n tr o l d r a w in g s h a ll in c lu d e th e s a me d e s c r ip tio n o f th e p a r t a s r e q u ir e d o n
s p e c if ic a tio n c o n tr o l d r a w in g s . I f v e n d o r d r a w in g s a r e ma d e a v a ila b le , th e
c o n te n t o f th e s o u r c e c o n tr o l d r a w in g s h a ll b e limite d to v e n d o r 's p a r t n u mb e r ,
n a me , a n d a d d r e s s . I n e i t h e r c a s e , t he f o llo w in g n o te s h a ll a p p e a r o n th e s o u r c e
c o n tr o l d r a w in g : “ O n ly th e p a r t( s ) s p e c if ie d o n th is d r a w in g a n d id e n tif ie d b y
v e n d o r 's n a me ( s ) , a d d r e s s ( e s ) , a n d p a r t n u mb e r ( s ) h a s ( h a v e ) b e e n te s te d a n d
a p p r o v e d b y G S F C f o r u s e i n n a me o f i t e m. A s u b s t i t u t e p a r t s h a l l n o t b e u s e d
w ith o u t p r io r te s tin g a n d a p p r o v a l b y G S F C. ” S e e F ig u r e 2 6 .
REVISION
DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED
1.
ONLY THE PART SPECIFIED ON THIS DRAWING AND
IDENTIFIED BY VENDOR'S NAME, ADDRESS AND PART
NUMBER HAS BEEN TESTED AND APPROVED BY GSFC
FOR USE IN MODEL XYZ. A SUBSTITUTE PART SHALL
NOT BE USED WITHOUT PRIOR TESTING AND APPROVAL
BY GSFC.
2.
APPROVED SOURCE:
FOLD
REV
LINE
JONES MFG. CO.,
STREET ADDRESS, CHICAGO, IL
PART NUMBER XX3-X4XX
GC
SOURCE CONTROL DRAWING
REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 26: Sample Source Control Drawing
a.
T h e s o u r c e c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r p a r t
its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
54
ENGINEERING DRAWING STANDARDS MANUAL
b . T h e a s s e mb ly ( o r in s ta lla tio n ) d r a w in g s h a ll c a ll o u t th e p a r t b y s o u r c e c o n tr o l
d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f th e d r a w in g , th e s o u r c e
c o n t r o l d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d b y t h e f o l l o w i n g n o t e : “ V e n d o r
P a r t— s e e s o u r c e c o n tr o l d r a w in g . ” A s o u r c e c o n tr o l d r a w in g s h a ll b e
i d e n t i f i e d b y t h e w o r d s “ S o u r c e C o n t r o l D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e
b lo c k .
c.
4.14.
A s o u r c e c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e
v e n d o r 's s tip u la tio n s .
Specification Control Drawing
Specification control drawings are prepared to record the characteristics of a
v e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) . T h is typ e o f d r a w in g ma y
a ls o b e u s e d to d o c u me n t G S F C p a r ts th a t a r e s e n t to a u n iq u e v e n d o r to p e r f o r m
a s p e c i f i c o p e r a t i o n b e c a u s e o f s p e c i a l eq u i p me n t a n d / o r h a r d w a r e o n l y a v a i l a b l e
t h e r e . S u c h c h a r a c t e r i s tic s a r e s iz e , s h a p e , mo u n tin g d ime n s io n s , a n d o th e r
d e s ig n r e q u ir e me n ts , in c lu d in g te s ts , w h e n a p p lic a b le , th a t c o u ld b e o b ta in e d
f r o m th e v e n d o r 's ma n u f a c tu r in g d r a w in g s if th e y w e r e ma d e a v a ila b le . T h e
v e n d o r 's p a r t n u mb e r , n a me , a n d a d d r e s s s h a ll b e in c lu d e d , e ith e r in n o te o r ta b le
f o r m. S e e F ig u r e 2 7 .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
55
ENGINEERING DRAWING STANDARDS MANUAL
REVISION
DESCRIPTION
SYM
DATE
APPROVAL
VENDOR PART NO.
VENDOR NAME & ADDRESS
SMITH ENGINEERING COMPANY
XA3-X29XX
BUFFALO. N.Y.
PRODUCTION TEST PROCEDURE
WITH PORT 3
PERMISSIBLE LEAKAGE
PLUGGED APPLY
AT RATE OF
COMMENTS
PRESSURE AS
FOLLOWS
INTERNAL
EXTERNAL
1 DROP PER HR
5 PSI AT
NONE
AT PORT 1
PORT 2
2250 PSI
NONE
AT PORT 2
NONE
AT PORT 1
PORT 1
SHOULD BE HELD
BE SURE THAT
DOWN DURING
SEALINGPOPPET
THESE TESTS
IS LOOSE IN
VALVE WHEN
AT PORT 1
2250 PSI
NONE
AT PORT 1
NONE
AT POR 2
EACH TEST
SHOULD BE HELD
PRESSURE
DOWN DURING
IS APPLIED
THESE TESTS
.438-20 UNF-3B
FOR .25 OD TUBING
PER AND 10050
3 PLACES
REV
3X
PORT 2
FOLD
PORT 1
NONE
LINE
1 DROP PER HR
5 PSI AT
PORT 2
1.250
PORT 1
GC
SPECIFICATION CONTROL DRAWING
PORT 3
ø 2X .020
1.190
REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO.
2.380
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 27: Sample Specification Control Drawing
a.
T h e s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r
p a r t its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .
b . T h e a s s e mb l y ( o r i n s t a l l a t i o n ) d r a w i n g s h a l l c a l l o u t t h e p a r t b y t h e
s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f
t h e d r a w i n g , t h e s p e c i f i c a t i o n c o n t r ol d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d
b y th e n o te “ V e n d o r P a r t— s e e s p e c if ic a tio n c o n tr o l d r a w in g . ” A s p e c if ic a tio n
c o n tr o l d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ S p e c if ic a tio n Co n tr o l
D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o c k .
c . A s p e c i f i c a t i o n c o n tr o l d r a w i n g d o e s n o t p r e v e n t p r o c u r e me n t f r o m mu l t i p l e
s o u r c e s w h e n th e v e n d o r p a r t h a s b e e n d e te r min e d to b e e q u iv a le n t to o th e r
v e n d o r p a r t s b y t h e F e d e r a l C a t a l o g in g P r o g r a m, r e s u l t i n g i n F e d e r a l I t e m
I d e n tif ic a tio n N u mb e r ( F I I N ) n u mb e r a s s ig n me n t o r w h e n th e p a r t is
ma n u f a c tu r e d b y a lic e n s e e o f th e v e n d o r .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
56
ENGINEERING DRAWING STANDARDS MANUAL
d . T h e p r e p a r a tio n o f s p e c if ic a tio n c o n tr o l d r a w in g s c a n b e a v o id e d b y p r o c u r in g
th e v e n d o r 's ma n u f a c tu r in g d r a w in g s . I n th e e v e n t th e v e n d o r c la ims
p r o p r ie ta r y r ig h ts a n d r e f u s e s to p r o v id e h is ma n u f a c tu r in g d r a w in g s , h e s h a ll
b e r e q u e s t e d t o f u r n i s h a n o u t l i n e d r a w i n g o f h is p a r t s u f f i c i e n t t o i n c l u d e t h e
r e q u ir e me n ts s ta te d a b o v e . W h e n th e v e n d o r p r o v id e s e ith e r typ e o f d r a w in g s
( i . e . , ma n u f a c t u r i n g d r a w i n g s o r a n o u t l i n e d r a w i n g ) , t h e p a r t n u mb e r c a l l o u t
o n th e d r a w in g s h a ll b e b y th e v e n d o r 's n u mb e r .
e.
4.15.
A s p e c if ic a tio n c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e
v e n d o r 's s tip u la tio n s .
Standard Part Drawing
S ta n d a r d p a r ts s h a ll b e s e le c te d f r o m g o v er n me n t a n d in d u s tr y s ta n d a r d s in th a t
order of precedence. If neither of these contain a part satisfactory for the design
n e e d s , a d r a w i n g s h a l l b e p r e p a r e d . B e f o r e p r e p a r a tio n , it mu s t b e d e te r min e d
th a t th e p a r t s h a ll b e a G S F C s ta n d a r d p a r t, in w h ic h c a s e it s h a ll b e d r a f te d o n
G S F C s ta n d a r d ma n u a l f o r ma t.
4.16.
Tabulated Drawing
A ta b u la te d d r a w in g d e p ic ts s imila r ite ms w i t h d i f f e r e n c e s i n c h a r a c t e r i s t i c s s u c h
a s d ime n s io n s , ma te r ia l, f in is h , a n d o th e r r e q u ir e me n ts . T h e s e d if f e r e n c e s a r e
ta b u la te d o n th e d r a w in g , th e f ix e d c h a r a c t e r i s t i c s d e p i c t e d o n c e .
P ic to r ia l d if f e r e n c e s th a t a r e n o t c le a r s h o u ld b e s h o w n in v ie w s o r d e ta ils a n d
s h o u ld b e p r o p e r ly la b e le d . A ta b u la te d d r a w in g p r e c lu d e s th e p r e p a r a tio n o f a n
i n d i v i d u a l d r a w i n g f o r e a c h i t e m. S e e F i g u r e 2 8 .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
57
ENGINEERING DRAWING STANDARDS MANUAL
REVISION
DESCRIPTION
SYM
NOTES:
DATE
APPROVAL
UNLESS OTHERWISE SPECIFIED
1.
PASSIVATE PER QQ-P-35, TYPE II
2.
BAG PART PER MIL-P-116, METHOD III,
AND TAG WITH PART NUMBER GC1234567.
A
B
2X R .31
ø1.360
A
ø3.265
A
.020
A
FOLD
ø.953
A
REV
.003
LINE
.020
ø3.95
BAR
TABLE I
REQD
ITEM
REQD
CRES
PART NO.
NO.
DIM. A
DIM. B
.XX
3.500
NATIONAL AERONAUTICS AND
TOLERANCES:
±.02
GCXXXXXX5-1
FRACTIONS
±1°
125
3.625
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
GCXXXXXX5-3
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
DESIGNER
1.250
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
PART NO.
ASTM A582 /303 COND A
MATERIAL
DESCRIPTION
GC1234567
2X R .31
HARDNESS TEST NOT REQUIRED
1.375
DRAWN
TITLE
COUPLER
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
1234567
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 28: Sample Tabulated Drawing
4.17.
Tooling Drawing
T o o lin g f ix tu r e s a n d te mp la te s a r e p r o d u c tio n a id s . T h e te mp la te s a r e n o t
in te n d e d a s e n g in e e r in g d o c u me n ta tio n o f th e f in a l e n d ite m c o n f ig u r a tio n .
T h e e n g in e e r in g d r a w in g f o r w h ic h a T o o lin g d r a w in g is b e in g p r o d u c e d s h a ll
c a r r y th e f o llo w in g n o te :
THESE FEATURES ARE TO BE INSTALLED USING
TOOLING TEMPLATE GX-XXXXXXX ONLY. THE
ACTUAL TOLERANCES ON THE FEATURES
LOCATIONS ARE CONTROLLED BY THE TEMPLATE.
W h e n a f f e c te d b y to o lin g , d ime n s io n s a n d th e ir to le r a n c e s s h a ll b e f la g g e d o n th e
e n g in e e r in g d r a w in g to th e a b o v e n o te a n d e n c lo s e d in p a r e n th e s e s to in d ic a te
r e f e r e n c e i n f o r ma t i o n o n l y.
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T h e f o llo w in g n o te s h a ll b e a d d e d to th e to o lin g d r a w in g :
THIS TOOLING IS USED TO FABRICATE PIECE PART
GX-XXXXXXX.
T h e to o lin g d r a w in g s h a ll b e d ime n s io n e d th e s a me w a y a s th e e n g in e e r in g
d r a w in g .
4.18.
Composite Material Drawing
A c o mp o s ite ma te r ia l d r a w in g is a n e n g in e e r in g r e p r e s e n ta tio n o f tw o o r mo r e
ma t e r i a l s i n c o mb i n a t i o n ( r e i n f o r c i n g f ib e r s a n d r e s in b in d e r ) . T h e f ib e r a n d
r e s in d if f e r in f o r m o r c o mp o s itio n , a n d a r e ta ilo r e d to me e t s p e c if ic e n g in e e r in g
p r o p e r t i e s . T h e d r a w i n g s h a l l s p e c i f y t h e mu l t i - p ly l a min a t e c o n f i g u r a t i o n t h a t
d e f in e s th e n u mb e r o f p lie s , th e s ta c k in g s e q u e n c e , th e p ly a n g le o r ie n ta tio n , th e
p r e p r e g f i b e r - r e s i n ma t e r i a l s , a n d t h e p h ys i c a l d i me n s i o n s .
F o r th e f o llo w in g r e q u ir e me n ts , r e f e r to F ig u r e 2 9 a s a n e x a mp le o f a c o mp o s ite
ma te r ia l d r a w in g .
a.
A c o o r d in a te r e f e r e n c e a n d a n g le d ire c tio n s h a ll b e s h o w n f o r b o th th e p a r t
and the stacked detail.
b . E a c h p ly s h a ll b e id e n tif ie d b y I te m N o . , a n g le , a n d th ic k n e s s , a s s h o w n in
T a b le 1 o f F ig u r e 2 9 .
c.
D a s h n u mb e r s ma y b e u s e d to s h o w v ar ia tio n s , s u c h a s le n g th a n d ma te r ia l, a s
s h o w n in T a b le 2 o f F ig u r e 2 9 .
d . S ta c k in g s e q u e n c e c o d e ( + 3 0 /0 /- 3 0 /9 0 ) 2 S , a s s h o w n in T a b le 1 in F ig u r e 2 9
d e f in e s th e f o llo w in g f e a tu r e s :
P ly 1
P ly 2
P ly 3
P ly 4
Subscript “2”
Subscript “S”
+ 3 0 - d e g r e e o r ie n ta tio n
0 - d e g r e e o r ie n ta tio n
- 3 0 - d e g r e e o r ie n ta tio n
+ 9 0 - d e g r e e o r ie n ta tio n
in d ic a te s r e p e a t s e q u e n c e ( p lie s 1 – 4 ) tw o
time s , f o r b u ild u p o f p lie s 5 – 8 .
in d ic a te s s ymme tr y, i. e . , p lie s 1 – 8 r e p e a te d in
r e v e r s e o r d e r f o r b u ild u p o f p lie s 9 – 1 6 .
T h e c o d e is r e a d ( + 3 0 /0 /- 3 0 /9 0 /+ 3 0 /0 /- 3 0 /9 0 /9 0 /- 3 0 /0 /+ 3 0 /9 0 /- 3 0 /0 /+ 3 0 ) .
E x a mp le s o f o th e r v a r ia tio n s to th e c o d e a r e ( 0 3 /9 0 2 /4 5 /- 4 5 3 ) S . T h i s c o d e i s r e a d
( 0 /0 /0 /9 0 /9 0 /+ 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /+ 4 5 /9 0 /9 0 /0 /0 /0 ) .
I n t h e s a me e x a mp l e , t h e s u b s c r i p t “ T ” c a n b e u s e d in lie u o f “ S ” to d e s ig n a te th e
t o t a l l a min a t e . F o r e x a mp le , ( 0 3 /9 0 2 /4 5 /- 4 5 6 /4 5 /9 0 2 /0 3 ) T . H o w e v e r , i n t h i s
e x a mp le , u s in g th e “ S ” to d e n o te s ymme tr y is th e p r e f e r r e d me th o d . “ T ” is
g e n e r a l l y r e s e r v e d f o r l a min a t e s w h e r e s y mme t r y i s n o t s p e c i f i e d , a s i n
( 0 /3 0 /6 0 /9 0 ) T .
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Figure 29: Composite Material Drawing Example
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5.
ENGINEERING DRAWING STANDARDS MANUAL
NUMBERING SYSTEM FOR DRAWINGS AND
SUPPORTING DOCUMENTATION
T h e G S F C n u mb e r in g s ys te m f o r id e n tif yin g e n g in e e r in g d r a w in g s a n d a s s o c ia te d
lis ts is b a s e d o n th e “ u n it n u mb e r ” p r in c ip le , w h e r e b y th e s a me b a s ic n u mb e r
a s s ig n e d to a n a s s e mb ly d r a w in g is a ls o a p p lie d to in d e x , u s a g e , d a ta , a n d p a r ts
lists.
a.
D r a w in g n u mb e r s s h a ll c o n s is t o f a s s ig n e d b a s ic s e v e n - d ig it n u mb e r s ,
p r e f ix e d b y th e le tte r “ G ” ( s ig n if yin g G S F C) a n d a s e c o n d le tte r s ig n if yin g th e
drawing size (B, C, D, E, F, or J).
b . A s s o c ia te d lis t n u mb e r s s h a ll b e th e b a s ic s e v e n - d ig it d r a w in g n u mb e r p r e f ix
w i t h P L o r I L a s a p p l i c a b l e . R e f e r to D e f in itio n s p a r a g r a p h 8 . 1 o n p a g e 7 1 .
c.
A ll G S F C o r g a n iz a tio n s u s in g d r a w in g n u mb e r s s h a ll ma k e th e ir r e q u e s t to th e
M e c h a n i c a l S y s t e ms D i v i s io n , M e c h a n i c a l E n g i n e e r in g Br a n c h ( d e s ig n a te d
c u s to d ia n ) f o r b lo c k s o f n u mb e r s f o r th e ir f lig h t h a r d w a r e a n d g r o u n d s u p p o r t
e q u ip me n t.
d . T h e ma n a g e me n t o f d r a w i n g n u mb e r s b e c o me s t h e r e s p o n s i b i l i t y o f t h e
e n g in e e r in g d e s ig n g r o u p to w h o m th e y a r e a s s ig n e d . Re a s s ig n me n t o f th e
n u mb e r s to g r o u p s u b s e c tio n s o r in d iv id u a ls , o th e r c o n tr a c to r s o r
s u b c o n tr a c to r s , o r o th e r p r o g r a ms o r p r o j e c ts mu s t b e c o n tr o lle d , r e c o r d e d ,
a n d ma in ta in e d b y th e Co n f ig u r a tio n Ma n a g e me n t O f f ic e r .
e.
E n g in e e r in g d o c u me n ta tio n ( d r a w in g s, e n g in e e r in g c h a n g e o r d e r s , a n d
c o n f ig u r a tio n c h a n g e r e q u e s ts ) s h a ll b e r e ta in e d b y th e Co n f ig u r a tio n Ma n a g e r
i n t h e r e s p o n s i b l e e n g i n e e r i n g o r g a n iz a t i o n u n t i l o t h e r w i s e d i r e c t e d b y t h e
Project.
f.
W h e n i t i s n e c e s s a r y t o i d e n t i f y a d ra w i n g a s a s k e t c h , t h e n u mb e r s h a l l b e
a s s i g n e d b y t h e o r i g i n a t o r . T h e s k e t c h s h a l l b e ma i n t a i n e d b y t h e o r i g i n a t o r
t o p r e v e n t t h e n e c e s s i t y o f a c e n t r a l c o n t r o l . S k e t c h e s s h a ll n o t b e p r e p a r e d in
p l a c e o f e n g i n e e r i n g d r a w i n g s f o r p r o c u r e me n t o f mo c k u p s , mo d e l s ,
p r e p r o d u c tio n h a r d w a r e o r f lig h t h ar d w a r e , a n d a s s o c ia te d e q u ip me n t.
g . G S F C n u mb e r s f o r s p e c if ic a tio n s , p r o c e s s e s , a n d s t a n d a r d s s h a l l b e i s s u e d b y
th e s p e c if ic o r g a n iz a tio n f o r w h ic h s u c h d o c u me n ts a r e b e in g d e v e lo p e d .
P r o c e d u r e s g o v e r n in g th e p r e p a r a tio n o f G S F C s p e c if ic a tio n s , p r o c e s s e s , a n d
standards shall be in accordance with GSFC-S-250-3, Guide for the
P r e p a r a t i o n o f S p e c i f i c a t i o n s. T h e L i b r a r y S e r v i c e s B r a n c h o f t h e G S F C
I n f o r ma t i o n M a n a g e me n t D iv i s i o n s h a l l r e c e i v e t w o co p i e s o f f i n a l , a p p r o v e d
d o c u me n ts th a t a r e o f g e n e r a l in te r e s t a n d u s e . A lis t o f e x is tin g
s p e c i f i c a t i o n s i s ma i n t a i n e d b y t h e L i b r a r y S e r v i c e s B r a n c h .
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h . I n th e a b s e n c e o f a p r o j e c t- d ir e c te d d o c u me n t n u mb e r in g p la n , th e f o llo w in g
system shall be used:
GSFC - S - 722 - 93 - 002 - A
revision letter
ordinal specification number issued in given year
year of specification issue
Branch, Division or organization
issuing & maintaining specification
"S" for specification, "P" for procedure
Goddard Space Flight Center
5.1.
Part Numbering
E a c h d e t a i l p a r t , s u b a s s e mb l y , e t c . , s h all b e id e n tif ie d b y a p a r t n u mb e r a s
follows:
a.
A n ite m c o v e r e d b y a n a p p r o v e d s tan d a r d a n d u s e d w ith o u t a lte r a tio n o r
s e l e c t i o n s h a l l b e i d e n t i f i e d b y t h e p r o p e r s ta n d a r d n u mb e r ( s u c h a s MS
n u mb e r f o r mi l i t a r y s t a n d a r d ) , w h i c h s h a l l i n c l u d e a n y d a s h n u mb e r o r c o d e
n e c e s s a r y f o r c o mp l e t e i d e n t i t y .
b . E a c h n o n s ta n d a r d ite m s h a ll b e id e n tif ie d b y a p a r t n u mb e r th a t s h a ll b e , o r
s h a ll in c lu d e , th e d r a w in g n u mb e r .
c.
V e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r ts o r a s s e mb lie s s h a ll b e id e n tif ie d b y
th e v e n d o r 's p a r t n u mb e r . S e e “ S p e c if ic a tio n Co n tr o l D r a w in g , ” p a r a g r a p h
4 . 1 4 o n p a g e 5 4 , a n d “ S o u r c e Co n tr o l D r a w in g , ” p a r a g r a p h 4 . 1 3 o n p a g e 5 3 .
d . A lte r e d o r s e le c te d p a r ts s h a ll b e id e n tif ie d a s r e q u ir e d . S e e “ A lte r e d o r
S e le c te d V e n d o r P a r t D r a w in g , ” p a r a g r a p h 4 . 1 o n p a g e 3 9 .
e.
S ymme tr ic a lly o p p o s ite p a r ts s h a ll b e d e s ig n a te d b y - 1 ( s h o w n ) a n d - 2
( o p p o s i t e ) c a r r y i n g t h e o d d / e v e n r e l a t i o n s h i p t o h i g h e r n u mb e r s a s n e c e s s a r y .
T h e p a r t s h o w n s h a ll a lw a ys b e a n o d d n u mb e r , a n d its o p p o s ite , th e n e x t
h ig h e r n u mb e r .
P a r ts s h a ll b e id e n tif ie d o n th e f ie ld o f d r a w in g b y s h o w in g b o th th e id e n tif yin g
p a r t n u mb e r a n d f in d n u mb e r w h e r e c r o s s - r e f e r e n c e d o n a s e p a r a te E n g in e e r in g
P a r ts L is t. S e e “ S a mp le A s s e mb ly D r a w in g , ” F ig u r e 1 7 o n p a g e 4 0 . W h e n th e
p a r ts a p p e a r in th e L is t o f Ma te r ia l o n th e d r a w in g , o n ly th e ite m n u mb e r is c a lle d
o u t o n th e f ie ld o f th e d r a w in g . S e e F ig u r e 3 4 , “ S a mp le A s s e mb ly D r a w in g W ith
L is t o f Ma te r ia l, ” o n p a g e 8 0 .
A d e ta il d r a w in g d e p ic ts a s in g le d e ta il p a r t, a n d th e p a r t s h a ll b e d e s ig n a te d b y
th e d r a w in g n u mb e r . S e e “ D e ta il D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 .
A n in s e p a r a b le a s s e mb ly d r a w in g d e p ic ts p a r t s p e r ma n e n t l y f a s t e n e d t o g e t h e r , a n d
th e a s s e mb ly s h a ll b e d e s ig n a te d b y th e d r a w in g n u mb e r . T h e in d iv id u a l p a r ts
s h a ll b e d e s ig n a te d b y p a r t n u mb e r a s d e s c r ib e d p e r “ I n s e p a r a b le A s s e mb ly
D r a w in g , ” p a r a g r a p h 4 . 6 o n p a g e 4 4 .
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E a c h o f th e p a r ts s h o w n o n a ta b u la te d d r a w in g s h a ll b e id e n tif ie d b y th e d r a w in g
n u mb e r s u f f ix e d w ith a d a s h n u mb e r . T h e b a s ic d r a w in g n u mb e r a lo n e s h a ll n o t
b e u s e d t o i d e n t i f y a p a r t . S e e “ T a b u la te d D r a w in g , ” p a r a g r a p h 4 . 1 6 o n p a g e 5 6 .
P a r t s t h a t mu s t b e ma t e d , a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s
r e q u i r e d , s h a l l b e a s s i g n e d a s i n g l e n u mb e r t o d e s i g n a t e e a c h ma t c h e d s e t o r p a i r .
Co mp o n e n t p a r ts s h o w n in ma tc h e d - s e t d r a w in g s in s te a d o f s e p a r a te d e ta il
d r a w in g s s h a ll b e id e n tif ie d b y th e id e n tif yin g p a r t n u mb e r a n d f in d n u mb e r . S e e
“ Ma tc h e d - S e t D r a w in g , ” p a r a g r a p h 4 . 9 o n p a g e 4 8 .
5.2.
Find or Item Numbering
U n d e r th e f in d o r ite m n u mb e r in g s ys te m, a n u mb e r is a s s ig n e d to a p a r t o r d e ta il
a s s e mb l y f o r t h e p u r p o s e o f l o c a t i n g i t i n t h e f i e l d o f t h e a s s e mb l y d r a w i n g . T h e
f in d o r ite m n u mb e r is a ls o s h o w n in th e E n g in e e r in g P a r ts L is t f o r a n a s s e mb ly
d r a w in g , c r o s s - r e f e r e n c e d to th e p a r t n u mb e r u s e d f o r p r o c u r e me n t p u r p o s e s .
5.3.
Order of Precedence of Specifications and Standards
W h e n i d e n t i c a l p a r t s o r a s s e mb l i e s o f e q u a l q u a l i t y a r e i d e n t i f i e d b y mo r e t h a n
o n e d o c u me n t, th e ite m s h a ll b e r e f e r e n c e d o n d r a w in g s in th e f o llo w in g o r d e r :
5.3.1.
Group I
G r o u p I c o v e r s g o v e r n me n t s p e c if ic a tio n s a n d s ta n d a r d s lis te d f o r
u s e b y G S F C a n d in d u s tr y d o c u me n ts c o o r d in a te d to th e e x te n t
indicated as follows in (c) and (e).
a.
Co o r d in a te d f e d e r a l s p e c if ic a tio n s a n d s ta n d a r d s .
b . C o o r d in a t e d mi l i t a r y s p e c i f i c a t i o n s a n d s t a n d a r d s ( i n c l u d in g
JANs, ANs, and ANDs).
c.
I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e p r o mu lg a te d
b y n a t i o n a l l y r e c o g n i z e d as s o c i a t i o n s , c o mmi t t e e s , a n d
te c h n ic a l s o c ie tie s ) h a v in g c o o r d in a te d s ta tu s e s ta b lis h e d u n d e r
p o lic ie s a n d p r o c e d u r e s o f o th e r g o v e r n me n t a g e n c ie s a n d
approved for GSFC use.
d . L i mi t e d c o o r d in a t i o n mi l i t a r y a n d i n t e r i m f e d e r a l s p e c i f i c a t i o n s
a n d s ta n d a r d s is s u e d b y o th e r g o v e r n me n t a g e n c ie s a n d
approved for GSFC use.
e.
5.3.2.
I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s h a v in g limite d
c o o r d in a tio n s ta tu s e s ta b lis h e d u n d e r p o lic ie s a n d p r o c e d u r e s o f
o th e r g o v e r n me n t a g e n c ie s a n d a p p r o v e d f o r G S F C u s e .
Group II
G r o u p I I c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e
p r o mu l g a t e d b y n a t i o n al l y r e c o g n i z e d a s s o c i a t i o n s , c o mmi t t e e s , a n d
te c h n ic a l s o c ie tie s ) a p p r o v e d f o r u s e b y G S F C, f o r w h ic h s ta tu s
e q u iv a l e n t t o mi l i t a r y d o c u me n t s h a s n o t b e e n e s t a b l i s h e d .
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5.3.3.
63
Group III
G r o u p I I I c o v e r s G o v e r n me n t s p e c if i c a t i o n s a n d s t a n d a r d s n o t
p r e v io u s ly lis te d b y G S F C.
5.3.4.
Group IV
G r o u p I V c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s n o t
p r e v io u s ly lis te d f o r u s e b y G S F C. Co mp a n y s p e c if ic a tio n s a n d
s ta n d a r d s a r e n o t to b e c o n s id e r e d a s a p a r t o f th is g r o u p . Co p ie s
o f in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s s h o u ld b e o b ta in e d f r o m
the association concerned.
5.3.5.
Group V
G r o u p V c o v e r s c o mp a n y s p e c if ic a tio n s a n d s ta n d a r d s . Re f e r e n c e
to a c o mp a n y s p e c if ic a tio n o r s ta n d a r d f o r n e w a p p lic a tio n s o r
d e s ig n s s h a ll b e d is c o n tin u e d u p o n th e is s u a n c e o f a s p e c if ic a tio n
or standard in Group I, II, III, or IV covering an interchangeable
i t e m o f e q u iv a l e n t q u a l i t y .
N o te ( a p p lic a b le to G r o u p s I , I I , I V , a n d V a b o v e ) :
W h e n in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s a r e s p e c if ie d o n G S F C
d r a w in g s a n d d o c u me n ts , s u c h s p e c if ic a tio n s a n d s ta n d a r d s s h a ll b e
a v a ila b le to G S F C p e r s o n n e l.
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6.
ENGINEERING ORDER
6.1.
General Requirements
T h e u s e o f E n g in e e r in g O r d e r ( E O ) f o r th e p u r p o s e o f r e v is in g r e le a s e d d r a w in g s
is th e p r e f e r r e d me th o d o f c h a n g in g d r a w in g s , a lth o u g h th e me th o d o f d ir e c t
c h a n g e to th e d r a w in g ma y b e c h o s e n b y th e p r o j e c t e n g in e e r .
After an EO system is elected, it is the responsibility of that project design
a c tiv ity to a s s ig n n u mb e r in g a n d ma in ta in th e d o c u me n ta tio n s ys te m. T h e
a p p r o v e d E O is c o n s id e r e d a n o f f ic ia l p a r t o f th e o r ig in a l d r a w in g a n d s h a ll
a l w a y s b e a v a i l a b le t o o th e r s , e v e n a f t e r i n c o r p o r a t i o n . W i t h t h i s s y s t e m,
r e f e r e n c e t o E O s i n t h e r e v i s i o n b l o c k o f d r a w i n g s i s p e r mi t t e d i n p l a c e o f t h e
u s u a l d e ta ile d lis tin g o f c h a n g e s .
6.2.
Format Sample
T h e f o llo w in g min imu m in f o r ma tio n s h o u ld b e in c lu d e d o n a n E O f o r m. S e e
F ig u r e 3 0 a o n p a g e 6 6 .
1 . D R A W I N G & R E V . L E V E L : T h e n u mb e r o f th e d r a w in g to b e c h a n g e d a n d th e
r e v i s i o n l e v e l a f f e c t e d . W h e r e t h e c h an g e i s e x a c t l y t h e s a me o n mo r e t h a n
o n e d r a w in g , a d d a n a s te r is k to th e d r a w in g a n d r e v is io n le v e l b lo c k ; th e n a d d
th e d r a w in g n u mb e r s a lo n g w ith th e n e x t a p p lic a b le E O n u mb e r to th e a s te r is k
ta b le o n th e f ie ld o f c h a n g e o n E O p a g e 1 . I f mo r e th a n o n e E O p a g e is
r e q u ir e d , t h e a d d i t i o n a l E O p a g e s w i l l o n ly n o te t h a t t h o s e p a g e s a f f e c t t h e
list of drawings the EO is written against.
2 . I N C . R E V . : T h e r e v is io n le tte r to b e p r o v id e d b y th e Co n f ig u r a tio n Ma n a g e r
( CM) a t th e time o f d r a w in g c h a n g e in c o r p o r a tio n . O u ts ta n d in g E O n u mb e r s
ma y b e in c o r p o r a te d u n d e r o n e r e v is io n le tte r .
3 . T I T L E : T i t l e o f t h e d r a w i n g t o b e r e v is e d .
4 . N E X T A S S E MBL Y : N e x t a s s e mb ly n u mb e r o f th e d r a w in g s a f f e c te d b y th e
change.
5 . U S E D O N : T h e typ e o f e q u ip me n t s u c h a s G r o u n d - S u p p o r t E q u ip me n t ( G S E )
o r F lig h t ( F L T ) .
6 . P R O G R A M: N a me o f p r o g r a m.
7 . R E A S O N : R e a s o n w h y t h e c h a n g e i s n e c e s s a r y r a th e r th a n d e s c r ip tio n o f th e
c h a n g e . A C o n f i g u r a t i o n C h a n g e R e q u e s t ( C C R ) n u mb e r a n d c l a s s t o b e
p r o v id e d b y th e p r o j e c t e n g in e e r w h e r e a p p lic a b le o r w h e n r e q u ir e d b y th e
CM.
8. TYPE OF EO:
A d v a n c e N o t ic e o f C h a n g e : A c h a n g e t o t h e d r a w i n g t h a t s h a l l t a k e p l a c e a t
s o me f u tu r e d a te . S e v e r a l E O s ma y b e in c o r p o r a te d u n d e r th e s a me r e v is io n
letter.
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D e v ia t io n : A r e c o r d o f a c h a n g e t o a ma n u f a c t u r e d p a r t . T h e c h a n g e i s t o
a c c e p t a d i s c r e p a n c y c o r r e c t i o n i n a p a r t. T h e E O w o u l d b e a s s i g n e d a b a c k
s la s h ( \) in s te a d o f a n E O r e v is io n let t e r a n d i d e n t i f i e d a s a “ D e v i a t i o n f o r
” in th e r e v is io n b lo c k . N o p h ys ic a l c h a n g e to th e f ie ld o f
s e r ia l n u mb e r
the drawing will occur.
O t h e r : A r e c o r d o f s p e c ia l te s ts o r c ir c u ms ta n c e s th a t mig h t n o t b e r e q u ir e d
o f a ll p a r ts .
9 . D E S C R I P T I O N : D e s c r ip tio n o f th e c h a n g e to b e ma d e s h a ll b e s h o w n u s in g
t h e w o r d s “ W a s ” a n d “ N o w ” o r “ R e mo v e ” a n d “ A d d . ” T h e w o r d s “ D e l e t e , ”
“ C a n c e l l e d ” o r “ S u p e r s e d e d ” ma y a l s o b e u s e d . I n th e s itu a tio n o f
s u p e r s e d in g a p r e v io u s E O , a “ W a s ” a n d “ N o w ” c u r r e n t c o n d itio n mu s t a ls o b e
s h o w n , j u s t a s if th e p r e v io u s E O h a d b e e n in c o r p o r a te d .
I f t h e c u r r e n t E O f o r ma t i s i n s u f f i c i e nt i n s i z e , a s h e e t 2 o r mo r e ma y b e
a d d e d ( s e e F ig u r e 3 0 b ) . I f a la r g e r p a g e is r e q u ir e d a s u p p le me n ta l s h e e t s h a ll
b e p r e p a r e d o n a r e g u la r d r a w in g - s iz e s h e e t r e p r o d u c ib le v e llu m a n d s h a ll
o f E O n u mb e r
o f d r a w in g
s ta te “ T h is s u p p le me n ta l s h e e t is p a g e
. ” E n te r in th e d e s c r ip tio n a r e a o f p a g e 1 o f th e E O to “ s e e
n u mb e r
of this EO.”
s u p p le me n ta l s h e e t p a g e
T h e E O mu s t b e o n a n a p p r o v e d E O f o r m. N o p a s te o n s o r lin e s tr ik e o u ts a r e
p e r mi t t e d . A l l l e t t e r i n g mu s t b e . 1 2 i n c h o r l a r g e r a n d u n if o r m i n s i z e .
OF
” : I n d ic a te n u mb e r 1 a n d th e to ta l n u mb e r o f E O s h e e ts .
10. “SHEET
O n r e ma in in g s h e e ts , e n te r th e n u mb e r o f th a t p a r tic u la r s h e e t o f th e E O o n ly.
1 1 . D i s p o s i t i o n : A c tio n s to b e ta k e n a s a r e s u lt o f th e c h a n g e .
1 2 . E F F E CT I V E : I f th e c h a n g e a f f e c ts o n ly a limite d n u mb e r o f a s e r ie s o f lik e
p a r t s , f i l l i n t h e s e r i a l n u mb e r ( s ) a n d d a t e . i F T H E C H A N G E
1 3 . D R A W N B Y : S ig n a tu r e , d a te , a n d G S F C CO D E .
1 4 . I S S U E D BY : S ig n a tu r e , d a te , a n d G S F C c o d e o f CM o f f ic ia l.
1 5 . CH E CK E D : S ig n a tu r e s , d a te , a n d G S F C c o d e s . W h e n p r a c tic a b le , s ig n a tu r e s
s h o u ld b e th o s e o f p e r s o n s w h o a p p r o v e d th e o r ig in a l d r a w in g .
16. APPROVED: sIGNATURE, DATE, AND Signature, date, and GSFC CODE.
1 7 . E N G I N E E R : S ig n a tu r e , d a te , a n d G S F C CO D E o f p r o j e c t r e s p o n s ib le
e n g in e e r .
1 8 . C C B A P P R O V A L : Co n f ig u r a tio n c o n tr o l b o a r d s ig n a tu r e .
1 9 . J O B O R D E R N O : F a b r ic a tio n n u mb e r to b e a s s ig n e d b y th e c o g n iz a n t
e n g in e e r . c o d e
2 0 . E O N O : T o b e a s s ig n e d b y th e c o n f ig u r a tio n ma n a g e me n t o f f ic e o r th e
designated representative for the program for which the EO is being written.
E O n u mb e r s a r e i s s u e d i n n u me r i c a l s e q u e n c e a g a in s t a p a r tic u la r d r a w in g
n u mb e r w h e n th e E O is s e n t f o r c h e c k in g .
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8
9
7
19
18
1
10
20
2
ENGINEERING ORDER
EO
GODDARD SPACE FLIGHT CENTER
EO NO.
DRAWING & REV LEVEL
INC REV
GREENBELT,MARYLAND
OF
SHEET
1.
DRAWING TITLE
5.
TYPE OF EO:
2.
3a . CCB APPROVAL
REASON
14
4.
ISSUED BY CMO
3b . JOB ORDER NO.
GSFC CODE LOCATION
8.
6.
ADVANCED NOTICE OF CHANGE
DEVIATION
Drawing will be revised
Drawing will not
be revised
OTHER (Explain)
PROGRAM
DATE
7.
12
EFFECTIVE
USED ON
SERIAL
NEXT ASSY
DATE
6
DESCRIPTION
5
USE
AS
IS
NO
PARTS
MADE
DISPOSITION
SCRAP
10.
RWK
4
DRAWN BY
DATE
RAWMATERIAL
CHECKED:
CODE
DATE
APPROVED:
CODE
DATE
APPROVED:
CODE
DATE
ENGINEERING:
CODE
DATE
CODE
PART IN PROCESS
11
13
15
16
17
Figure 30a: Engineering Order (sheet 1)
ENGINEERING ORDER
GODDARD SPACE FLIGHT CENTER
GREENBELT,MARYLAND
EO
DRAWING & REV LEVEL
EO NO.
SHEET
INC REV
OF
Figure 30b: Engineering Order (sheet 2)
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7.
DRAWING REVISIONS
7.1.
Revision Methods
Re v is io n s in th e f ie ld o f d r a w in g s a r e ma d e b y d e le tio n , e ith e r b y e r a s u r e o r
crossing out (a series of parallel lines placed on the face of drawing over the
d e le te d p o r tio n s o f d r a w in g ) , b y a d d itio n , o r b y r e d r a w in g ( a ll d e lin e a tio n s s h a ll
b e ma d e t o s c a l e ) .
7.2.
Revision Identification
Re v is io n s s h a ll b e id e n tif ie d b y s ymb o ls in th e f ie ld o f th e d r a w in g ( s e e
p a r a g r a p h 7 . 4 ) c r o s s - r e f e r e n c e d to th e r e v is io n d e s c r ip tio n . Re v is io n s ymb o ls
s h a ll b e e n te r e d in th e r e v is io n b lo c k ( s e e F ig u r e s 3 1 a , 3 1 b , a n d 3 1 c , p a g e 6 9 ) .
Re v is io n s s h a ll b e b y a lp h a b e tic a l le tte r a n d o r d e r , e x c e p t th a t le tte r s I , O , Q , S ,
X , a n d Z s h a ll n o t b e u s e d a s r e v is io n s ymb o ls . F o llo w in g le tte r Y , u s e A A , A B,
etc.; after AY, use BA, BB, etc.
7.3.
Revision of Multisheet Drawings
T h e r e i s o n l y o n e a c c e p t a b l e me t h o d o f r e c o r d i n g c h a n g e s t o mu l t i s h e e t d r a w i n g s .
Re v is io n s to a n y s h e e t( s ) s h a ll b e r e c o r d e d in th e r e v is io n d e s c r ip tio n b lo c k o n
s h e e t 1 , a n d r e f e r e n c e s h a ll b e ma d e to s h e e t ( s ) a f f e c t e d . L e v e l o f r e v i s i o n s h a l l
be changed on each drawing sheet whether or not that particular sheet is affected.
T h e r e v is io n d e s c r ip tio n b lo c k o n a ll s h e e ts o th e r th a n s h e e t 1 s h a ll s ta te “ S e e
s h e e t 1 f o r r e v is io n s . ”
7.4.
Revision Recording
A s y mb o l ( e . g . , “ A 3 ” ) e n c l o s e d i n a c i r c l e s h a l l a p p e a r i n t h e f i e l d o f d r a w i n g a t
th e p o in t o f r e v is io n . T h e le tte r “ A ” r e f e r s to a n y r e v is io n s c o mp le te d a t a g iv e n
time . T h e n u mb e r f o llo w in g r e f e r s to th e n u mb e r o f th e r e v is io n ma d e .
F ig u r e 3 1 a s h o w s e x a mp le s o f th is . T h e s a me s ymb o l ma y a p p e a r mo r e th a n o n c e
i f , i n t h e r e v i s i o n d e s c r i p t i o n c o l u mn , mo r e t h a n o n e a c t i o n t o o k p l a c e p e r l i n e
( s e e F ig u r e 3 1 a u n d e r s ymb o l “ A 3 , ” lin e 2 ) .
W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a d ir e c t in c o r p o r a tio n , r e v is io n
s ymb o ls a r e r e q u ir e d o n th e f ie ld o f th e d r a w in g , a n d a b b r e v ia te d d e s c r ip tio n s o f
th e c h a n g e s mu s t b e r e c o r d e d in th e r e v is io n b lo c k .
W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a n E O o r Re v is io n N o tic e s ys te m,
r e v is io n s ymb o ls a r e n o t r e q u ir e d o n th e f ie ld o f th e d r a w in g , b u t th e Re v is io n
for changes” or “See Revision Notice
Blo c k mu s t s ta te “ S e e E O n u mb e r
” in th e r e v is io n d e s c r ip tio n c o lu mn .
n u mb e r
F o r e ith e r me th o d o f in c o r p o r a tio n , th e p e r s o n in c o r p o r a tin g th e r e v is io n , th e
p e r s o n a s s ig n e d to c h e c k th e in c o r p o r a tio n , a n d th e c o g n iz a n t e n g in e e r
r e s p o n s i b l e f o r t h e r e v i s i o n a l l s h a l l d at e a n d i n i t i a l t h e r e v i s i o n b l o c k i n t h e
a p p r o v e d c o lu mn .
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REVISION
SYM
A3
B4
DESCRIPTION
(1)
(2)
(3)
(1)
(3)
R.188 WAS R.250
ADDED .500, 1.500 AND 2.000 DIMS
REM'D .750 AND 7.000 DIMS
WAS 1.500; (2) WAS .635;
WAS 1.000+.005; (4) WAS "NOTE 4"
-.000
DATE
APPROVAL
1-2-84
(SIGNATURE)
2-3-84
(SIGNATURE)
Note:
Z o n e c o lu mn n o t r e q u ir e d o n C- s iz e d r a w in g s a n d s ma lle r .
Figure 31a: Sample Revision Block
REVISION
SYM
C
DESCRIPTION
(1) REPLACES REV-B WITH CHANGE,
SEE EO NUMBER XXX
DATE
APPROVAL
1-9-84
(SIGNATURE)
Note:
I f n o “ E O ” s ys te m is u s e d , th e c h a n g e s w o u ld b e s p e lle d o u t, s imila r to
F ig u r e 3 1 a .
Figure 31b: Sample Revision Block
REVISION
SYM
B
DESCRIPTION
REPLACES REVISION-B WITHOUT CHANGE
DATE
APPROVAL
1-9-84
(SIGNATURE)
Note:
T h e o l d d r a w i n g s h a l l h a v e t h e s t a t e me n t “ R E D R A W N W I T H O U T C H A N G E ”
a d d e d to its r e v is io n b lo c k , r e q u ir in g n o c h a n g e le tte r , a n d “ S U P E RS E D E D ”
added above its Title block.
Figure 31c: Sample Revision Block
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7.5.
ENGINEERING DRAWING STANDARDS MANUAL
Redrawn or Replaced Drawings
T h e n e x t r e v is io n le tte r in s e q u e n c e s h a ll b e e n te r e d in th e r e v is io n b lo c k o f th e
n e w d r a w i n g . T o t h e r e v i s i o n b l o c k s h a l l b e a d d ed “ R e p l a c e s R e v i s i o n ( o l d
r e v is io n le tte r ) W ith Ch a n g e ” a n d a d e s c r ip tio n o f th e c h a n g e o r r e f e r e n c e to a n
E n g in e e r in g O r d e r ( E O ) d o c u me n t n u mb e r s ha l l b e r e c o r d e d i n t h e d e s c r i p t i o n
c o l u mn . A l l p r e v i o u s r e v is i o n s s h a l l b e o mi t t e d f r o m t h e s u p e r s e d i n g d r a w i n g .
T h e s t a t e me n t “ R e p l a c e d W i t h C h a n g e B y R e v i s i o n ( n e w r e v i s i o n l e t t e r ) ” s h a l l b e
a d d e d to th e s u p e r s e d e d d r a w in g 's r ev is io n b lo c k a n d “ S u p e r s e d e d ” s h a ll b e
p l a c e d i n 1 / 4 - i n c h - h i g h l e t t er i n g d i r e c t l y a b o v e t h e T i t l e b l o c k . W h e n a d r a w i n g
i s r e d r a w n w i t h o u t c h a n g e s , t h e p h r a s e “ R e p l a c e s R e v i s i o n ( ol d r e v i s i o n l e t t e r )
W ith o u t Ch a n g e ” s h a ll b e a d d e d to r e v is io n b lo c k a n d r e v is io n le tte r s h a ll r e ma in
u n c h a n g e d . S e e F i g u r e 3 1 c . O r i g i n a l n a me s a n d d a t e s f r o m t h e o ld t i t l e b lo c k
s h a l l b e t y p e d i n o n t h e r e p l a c e me n t d r a w i n g .
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PARTS LIST AND INDEX LIST
T h is s e c tio n e s ta b lis h e s min imu m r e q u ir e me n ts f o r th e p r e p a r a tio n a n d
s u b mis s io n o f P a r ts L is ts ( P L ) a n d I n d e x L is ts ( I L ) u s e d w ith e n g in e e r in g
d r a w in g s .
P a r t s L i s t s ma y b e p r e p a r e d f o r e a c h as s e mb l y d r a w i n g i n a c c o r d a n c e w i t h t h i s
s e c tio n . F o r p a r ts lis ts o n d r a w in g s , s e e F ig u r e 3 4 o n p a g e 8 0 o r F ig u r e 3 o n
page 10.
I n d e x L i s t s ma y b e p r e p a r e d f o r e a c h P a y l o a d , E n g i n e e r i n g M o d e l , M a j o r
A s s e mb ly, Co mp le x A s s e mb ly o f a s s e mb lie s , a s d ir e c te d b y P r o j e c t Ma n a g e r .
8.1.
Definitions
Cover Sheet: This refers to the first sheet of each Parts List or Index List and is
a record of the revisions.
P a r t s L i s t ( P L ) : T h i s i s a t a b u la t i o n o f t h e i t e ms n e c e s s a r y f o r f a b r i c a t i n g o r
a s s e mb l i n g t h e e n d i t e m( s ) t o w h i c h t h e l i s t a p p l i e s .
I n d e x L i s t ( I L ) : T h is is a lis t o f th e o n e p r in c ip a l a n d a ll s u b o r d in a te P L s
a p p l i c a b l e t o a ma j o r a s s e mb l y .
B u l k M a t e r i a l s : T h e s e a r e i t e ms t h a t a r e n e c e s s a r y c o n s t i t u e n t s o f a n a s s e mb l y o r
s u b a s s e mb l y , f o r w h i c h t h e q u a n t i t y r e q u ir e d i s n o t r e a d i l y p r e d e t e r min a b le .
E x a mp le s a r e o il, w a x , s o ld e r , c e me n t, in k , d a mp in g f lu id , g r e a s e , p o w d e r e d
graphite, flux, welding rod, thread, twine, and chain. If the quantity is known,
b u t t h e p h ys i c a l n a t u r e o f t h e ma t e r i a l i s s u c h t h a t i t i s n o t a d a p t a b le t o d e p ic t i o n
o n a d r a w in g , o r th e ma te r ia l c a n b e c u t to f in is h e d s iz e b y th e u s e o f s u c h h a n d
o r b e n c h to o ls a s s h e a r s , p lie r s , k n iv e s , e tc . w ith o u t f u r th e r ma c h in in g o p e r a tio n s ,
th e n th e ma te r ia l's c o n f ig u r a tio n s h a ll b e f u lly d e s c r ib e d in w r itin g w ith o u t th e
n e c e s s ity o f p ic to r ia l p r e s e n ta tio n .
S p e c i a l H a n d l i n g E q u i p m e n t a n d P a c k a g i n g : T h i s t e r m a p p l i e s t o i t e ms s u c h a s
b o x e s , s h ip p in g c o n ta in e r s , c r a d le s , c r a n e a tta c h me n ts , a n d o th e r s p e c ia l ite ms
n e e d e d f o r s to r in g a n d tr a n s p o r tin g .
S p e c i a l T e s t E q u i p m e n t : T h i s t e r m a p p l i e s t o i t e ms o f s p e c i a l t e s t e q u ip me n t
th a t a r e r e q u ir e d f o r g o v e r n me n t in s p e c tio n o r s e r v ic e ma in te n a n c e , s u c h a s te s t
s ta n d s , in d ic a to r s , e tc .
A p p l i c a b l e S t a n d a r d s , S p e c i f ic a t i o n s , a n d P u b l i c a t i o n s : T h i s t e r m a p p l i e s t o
d o c u me n ts r e f e r e n c e d o n o r in v o k e d b y th e d r a w in g s .
8.2.
Requirements
8.2.1.
List Preparation
T h e P L a n d I L ma y b e p r e p a r e d ma n u a lly o r b y typ e w r ite r o r
c o mp u te r w o r d p r o c e s s o r .
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8.2.2.
List Formats
L is ts s h a ll u s e p r e p r in te d 8 1 /2 - b y 1 1 - in c h s iz e f o r ma t. T h e
p r e p a r a tio n r e q u ir e me n ts a r e p r o v id e d h e r e in .
W h e n mo r e t h a n a s i n g l e s h e e t i s r e q u ir e d to p r e p a r e o r r e v is e a
l i s t , t h e l i s t t i t l e i s r e q u ir e d o n t h e f i r s t s h e e t o n ly .
The design activity shall use a cover sheet as illustrated in
F ig u r e 3 2 a o n p a g e 7 4 . E n tr ie s o n th e c o v e r s h e e t s h a ll b e
c o mp le te d a s e x p la in e d in “ Co v e r S h e e t, ” s e c tio n 8 . 3 , b e lo w .
8.2.3.
Revision Identification
A revision letter and the date of revision shall be applied to each
l i s t w h e n a n y c h a n g e i s ma d e . T h e l e t t e r s I , O , Q , a n d X s h a l l n o t
b e u s e d a s r e v is io n le tte r s . L is t s h a ll b e r e v is e d in d e p e n d e n tly o f
the associated drawings.
8.2.4.
Deleting Items
I t e ms t o b e d e l e t e d ma y b e e i t h e r l i n e d o u t, e r a s e d , o r o mi t t e d .
8.2.5.
Adding Items
N e w o r s u p e r s e d in g ite ms ma y b e a d d e d a t th e e n d o f a lis t o r
inserted in the list in proper sequence.
8.3.
Cover Sheet
The Cover Sheet shall be the first sheet for each PL or IL and shall
be prepared as indicated herein.
8.3.1.
Format
T h e Co v e r S h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 6 ( 1 /6 5 ) . Re f e r to
F ig u r e 3 2 a o n p a g e 7 4 .
8.3.2.
Entries
E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s o f th e Co v e r S h e e t
a s d ir e c te d o n th e f o llo w in g p a g e :
1 . C O D E I D E N T : E n te r Co d e I d e n tif ic a tio n n u mb e r a s a s s ig n e d b y
F e d e r a l S u p p ly CA G E P u b lic a tio n H 4 /H 8 f o r u s in g a c tiv ity.
N u mb e r i s l o c a t e d i n t i t l e b lo c k o f d e s i g n a c t i v i t y .
2 . L I S T N O . : E n te r th e n u mb e r o f th e P L o r I L f o r w h ic h th e c o v e r
sheet is being prepared.
3. SHEET
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4 . RE V : E n t e r r e v is i o n l e t t e r o f t h e l a t e s t r e v is i o n t o t h e P L .
Ch a n g e s to th is b lo c k s h a ll b e ma d e b y e r a s u r e .
5 . I T E M N O ME N C L A T U R E : E n t e r t h e s a me n o me n c l a t u r e t h a t
a p p e a r s i n t h e T i t l e b lo c k o f t h e a s s e mb l y f o r w h i c h t h e l i s t i s
b e in g p r e p a r e d . T h e ite m n o me n c la tu r e s h a ll a lw a ys b e a n o u n .
6 . V E N D O R: I f p r e p a r e d b y c o n t r a c t o r f o r G S F C , e n t e r c o n t r a c t o r
n a me a n d F e d e r a l S u p p ly CA G E Co d e N u mb e r s .
7 . P R E P A R E D : E n te r n a me o f p e r s o n p r e p a r in g lis t.
8 . A P P R O V E D : E n t e r s i g n a t u r e o f p er s o n a p p r o v i n g f o r a c c u r a c y
a n d c o mp le te n e s s .
9 . E N G A P P R O V A L : E n te r s ig n a tu r e o f A s s is ta n t P r o j e c t E n g in e e r
( o p tio n a l) .
1 0 . E N G A P P R O V A L : E n te r s ig n a tu r e o f P r o j e c t E n g in e e r
( ma n d a to r y f o r a ll p r o c u r e me n t) .
1 1 . A U T H E N T I C A T I O N : E n te r n a me o f p e r s o n d e s ig n a te d to s ig n
f o r d e s ig n a c tiv ity o r d iv is io n .
12. CONTRACT NO: When prepared by contractor for GSFC, enter
th e c o n tr a c t n u mb e r .
1 3 . L T R : E n te r r e v is io n le tte r o f c u r r e n t r e v is io n .
1 4 . D E S CRI P T I O N : E n te r a c o mp le te a n d c o n c is e d e s c r ip tio n o f th e
r e v is i o n t h a t a p p l i e s t o t h e P L .
1 5 . D A T E : E n te r d a te o f r e v is io n .
1 6 . A P P ( A p p r o v a l) : E n t e r i n i t i a l s o f p e r s o n c o mp l e t i n g r e v is i o n
review.
1 7 . R E C O R D O F R E V I S I O N : E n te r r e v is io n s ta tu s o f in d iv id u a l P L
sheets.
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Figure 32a: Parts List (and Index List) Cover Sheet
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ENGINEERING DRAWING STANDARDS MANUAL
8.4.
75
Parts List Continuation Sheet
T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s
h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e P L s h a l l
c o n ta in a c o v e r s h e e t a n d a s ma n y P L c o n tin u a tio n s h e e ts a s n e c e s s a r y to
c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .
8.4.1.
Format
T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 7 ( 1 /6 5 ) .
Re f e r to F ig u r e 3 2 b o n p a g e 7 6
8.4.2.
Entries
E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w :
1 . P A R T S L I S T N O . : O n e a c h s h e e t o f t h e P L , e n t e r t h e n u mb e r o f
th e c o r r e s p o n d in g d r a w in g .
2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r .
3 . I T E M F I N D N O S . : E n te r n u mb e r ta k e n f r o m a s s e mb ly d r a w in g .
4 . D W G . D O C U ME N T P A R T O R S T O C K N O . : E n t e r t h e p a r t
n u mb e r o r o t h e r i d e n t i f y i n g n u mb e r o f e a c h i t e m i n t h e l i s t .
5. QTY REQD PER ASSY.: Enter the quantity required for each
a s s e mb l y .
6 . CO D E I D E N T N O . ( Co d e id e n tif ic a tio n n u mb e r ) : E n t e r
a p p r o p r ia te n u mb e r a s s ig n e d to th e d e s ig n a c tiv ity p e r CA G E
P u b lic a tio n H 4 /H 8 . W h e n a g o v e r n me n t o r in d u s tr y s ta n d a r d
p a r t o r s p e c if ic a tio n n u mb e r a p p e a r s in Co lu mn 4 , n o e n tr y
s h a l l b e ma d e i n C o l u mn 6 . W h e n t h e C o d e I d e n t i f i c a t i o n
N u mb e r f o r a n i t e m i s i d e n t i c a l t o t h a t e n t e r e d i n B l o c k 1 o f t h e
Co v e r S h e e t, d o n o t r e p e a t th e n u mb e r in Co lu mn 6 o f th e P L
c o n tin u a tio n s h e e t.
7 . D R A W I N G T I T L E O R I T E M D ES C R I P T I O N ( I t e m d e s c r i p t i o n
o r n o me n c l a t u r e ) : E n te r th e n o u n o r n o u n p h r a s e d e s c r ib in g th e
ite m w h o s e p a r t o r id e n tif yin g n u mb e r a p p e a r s o n a s s e mb ly
d r a w in g .
8 . R E M A R K S : E n t e r i n f o r ma t i o n t h a t c o u ld b e u s e f u l f o r r e f e r e n c e
[ i. e . , s p e c if ic a tio n , c o n tr o l d r a w in g s , d e s ig n a tio n s ( e . g . , R1 0 ,
J 1 4 , e tc . ) , v e n d o r 's ite ms , e tc . ].
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Figure 32b: Parts List Continuation Sheet
S u p p le me n ta r y H e a d in g L is t. I n a d d i t i o n t o t h e h e a d i n g s t h a t a r e
u s e d f o r th e ite ms o f th e P L , a s u p p le me n ta r y h e a d in g lis t a s s ta te d
below shall be used if applicable:
- Bulk Material.
- S p e c ia l H a n d lin g E q u ip me n t a n d P a c k a g in g .
- S p e c i a l T e s t E q u i p me n t .
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- A p p lic a b le S ta n d a r d s , S p e c if ic a tio n s , a n d P u b lic a tio n s .
8.5.
Index List Continuation Sheet
T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s
h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e I L s h a l l
c o n ta in a c o v e r s h e e t a n d a s ma n y I L c o n tin u a tio n s h e e ts a s n e c e s s a r y to
c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .
8.5.1.
Format
T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 9 ( 1 /6 5 ) .
Re f e r to F ig u r e 3 3 o n p a g e 7 8 .
8.5.2.
Entries
E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w :
1 . I N D E X L I S T N U MB E R: O n e a c h s h e e t , e n t e r t h e n u mb e r o f
f i r s t a s s e mb l y l e v e l ( t o p o r ma i n a s s e mb l y ) .
2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r .
3. CODE IDENT.: Enter code identification taken from PL.
4 . L I S T N O . : E n te r n u mb e r o f th e P L .
5 . L I S T N O ME N C L A T U R E : E n t e r n o me n c l a t u r e a s i t a p p e a r s o n
the PL.
6 . A S S Y L E V E L : E n t e r t h e n e x t a s s e mb l y l e v e l n u mb e r o f t h e l i s t
n u mb e r .
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Figure 33: Index List Continuation Sheet
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ENGINEERING DRAWING STANDARDS MANUAL
8.6.
79
Find or Item Number System of Identification
8.6.1.
Definition
A f in d n u mb e r o r ite m n u mb e r is a n u mb e r a s s ig n e d to a p a r t o r
s u b a s s e mb ly f o r th e p u r p o s e o f lo c a tin g th e p a r t o r s u b a s s e mb ly in
th e f ie ld o f th e a s s e mb ly d r a w in g . T h e f in d o r ite m n u mb e r is a ls o
s h o w n i n t h e P a r t s L i s t f o r a n a s s e mb l y d r a w i n g , w h e t h e r t h e l i s t i s
s e p a r a te o r a n in te g r a l p a r t o f th e d r a w in g . T h e “ f in d n u mb e r ” is
u s u a lly a s s o c ia te d w ith a s e p a r a te P a r ts L is t, a n d th e “ ite m n u mb e r ”
is u s u a lly a s s o c ia te d w ith th e L is t o f Ma te r ia l o n d r a w in g s , b u t
b o th a r e u s e d f o r lo c a tin g p a r ts . P a r ts a n d s u b a s s e mb lie s a r e
id e n tif ie d b y o th e r n u mb e r s f o r p u r p o s e s o f p r o c u r e me n t a n d
ma r k in g . T h e s e id e n tif yin g n u mb e r s a r e c r o s s - r e f e r e n c e d t o t h e
f in d o r ite m n u mb e r s in th e P L o r in a ta b u la tio n o n th e a s s e mb ly
d r a w in g .
8.6.2.
Application and Limitation
T h e f in d o r ite m n u mb e r s ys te m p r o v id e s a q u ic k me a n s o f lo c a tin g
p a r ts o n a r e la tiv e ly s ma ll a r e a o f a d r a w in g h a v in g a h ig h d e n s ity
o f p a r ts . I t is p r e f e r r e d th a t th e c o n v e n tio n a l me th o d o f
id e n tif ic a tio n ( ite m n u mb e r s ) b e u s e d o n d r a w in g s o f s imp le
a s s e mb lie s , e v e n th o u g h f in d a n d p a r t n u mb e r s a r e u s e d f o r
c o mp le x a s s e mb lie s th a t a r e c o mp o n e n ts o f th e s a me e q u ip me n t.
S e e F ig u r e 3 4 o n p a g e 8 0 . F o r a s a mp le d r a w in g o f a n a s s e mb ly
u s in g th e f in d a n d p a r t n u mb e r s ys te m, s e e F ig u r e 1 7 o n p a g e 4 0 .
T h e i t e m n u mb e r s y s t e m o f i d e n t i f i c a t i o n s h a l l a l s o b e u s e d t o
l o c a t e p i e c e s o n d r a w i n g s o f i n s e p ar a b l e a s s e mb l i e s w h e n ma t e r i a l
s p e c if ic a tio n s o r ma te r ia l te mp e r s d if f e r f r o m o n e a n o th e r .
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REVISION
DESCRIPTION
SYM
DATE
APPROVAL
12
EXPERIMENT
INTERFACE
A
8
11
14
7
FOLD
3
LINE
6
10
4
4
13
13
3
A
3
2
2
14
4
MS20500-428
NUT, 1/4-2B UNF-3B
CRES
13
4
MS20500-1214
NUT, 3/4-16 UNF-3B
CRES
12
1
MS20500-1018
NUT, 5/8-18 UNF-3B
CRES
11
2
MS35308-314
SCREW, CAP, HEXAGON HD
CRES
10
1
GC1416639-1
SHIM
9
1
GC1416635-1
SPACER
8
1
GC1416636
SLEEVE
7
1
GC1416637
SEAT, UPPER
6
1
GC1416638
SEAT, LOWER
5
1
GD1416679
STEM, MOUNT C
4
2
GC1416681
3
3
GC1416640
BEARING
2
2
GC1416680
SEAT, MOUNT C
1
1
GD1416678
BASE, MOUNT C
GD1416697
MOUNT C, ASSEMBLY
1
X
REQD
ITEM
REQD
SHAFT, BEARING
GC
5
DESCRIPTION
PART NO.
NO.
SECTION
MATERIAL
MATERIAL SPEC& NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
A-A
REV
9
NATIONAL AERONAUTICS AND
TOLERANCES:
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE
DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFERMAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
APPROVED
ON FIELD OF DRAWING THUS
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE
THIS DRAWINGWAS PRODUCEDUSING
REV
APPROVED-STRESS
SOFTWARE:
GC
VERSION:
APPROVED-ENGINEER
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 34: Sample Assembly Drawing With List of Material
8.6.3.
Drawing Requirements
W h e n u s e d in th e f ie ld o f th e d r a w in g , ite m n u mb e r s s h a ll b e
e n c lo s e d in c ir c u la r - s h a p e d 1 /2 - in c h - d ia me te r b a llo o n s . F o r
d r a w i n g s o f e l e c t r o n ic c h a s s i s a s s e mb l i e s , i f t h e o u t l i n e s o f
r e s is to r s o r c a p a c ito r s a r e s h o w n , th e r e f e r e n c e d e s ig n a tio n s s h a ll
be placed within those outlines when practical. The corresponding
f i n d n u mb e r s s h a l l b e o mi t t e d f r o m t h e v ie w s . I n s u c h c a s e s , a
ta b le s h a ll b e p r o v id e d o n th e d r a w in g to s h o w th e f in d n u mb e r
a s s i g n e d t o e a c h i t e m t h a t i s i d e nt i f i e d b y a r e f e r e n c e d e s i g n a t i o n
o n th e v ie w s . T h e s a me f in d n u mb e r s h a ll b e u s e d f o r a n y g r o u p o f
r e f e r e n c e d e s ig n a tio n s a s s ig n e d to ite ms o f id e n tic a l
c h a r a c te r is tic s . T h e ite m o r f in d n u mb e r s o n a n y d r a w in g s h a ll b e
a s s ig n e d in d e p e n d e n tly o f th o s e o n a n y o th e r d r a w in g . F in d
n u mb e r s a s s ig n e d to s u b a s s e mb lie s s h o w n o n a n a s s e mb ly d r a w in g
s h a ll b e d is tin g u is h e d f r o m th o s e a s s ig n e d to p a r ts b y a d d in g a
le tte r s u f f ix to th e s u b a s s e mb ly f in d n u mb e r .
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8.7.
81
List of Material
A L i s t o f M a t e r i a l ( L M ) s h a l l b e p r e pa r e d a n d i n c l u d e d o n e a c h a s s e mb l y d r a w i n g
t o p r o v id e t h e i n d iv id u a l p a r t o r s u b a s s e mb l y i t e m n u mb e r , q u a n t i t y r e q u ir e d , p a r t
n u mb e r , d e s c r ip tio n , ma te r ia l, a n d ma te r ia l s p e c if ic a tio n . S e e F ig u r e 3 4 o n
page 80.
8.7.1.
Format
T h e L i s t o f M a t e r i a l s h a l l b e p la c e d a b o v e t h e d r a w i n g T i t l e b l o c k
a s s h o w n in F ig u r e 3 4 o n p a g e 8 0 .
8.7.2.
Entries
E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s in d ic a te d in
F ig u r e 3 o n p a g e 1 0 .
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9.
DOCUMENTATION MANAGEMENT
9.1.
Typical Drawing Flow for Flight Projects
Engineer
(concept)
Designer
(layout)
Engineer (approval
of layout concepts)
Designer Documents
(detail, subassy., assy., instl., etc.)
on CAD or conventional board drawing
Engineer
(review)
Design Analyst
(checking/review)
Engineer
(consideration
of suggestions
affecting design)
Designer
(modifications)
Design Analyst
(checking approval of
CAD/paper or vellum original)
Designer
(records change &
forwards check copy)
Engineer
(approval)
Configuration Manager
1. Update Master CAD File with Names & Dates
2. Release Prints to Fabrication
Parts
Completed
Parts
GSFC QA
No
Changes to
Released Drawings
Yes
Advance
Shop Copy
(optional)
Engineer EOs
(change notice)
Engineer
(acceptance or rejection)
Figure 35: Typical Drawing Flow for Flight Projects
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83
Archiving
D r a w in g s , E n g in e e r in g O r d e r s ( E O s ) , Ce r tif ic a tio n L o g s , A s s o c ia te d L is ts , a n d
Engineering Parts Lists (EPLs) shall be archived after signoff. Following are
s o me s a mp le a r c h iv in g me th o d s :
a.
F ilin g o f a ll p a p e r o r ig in a ls .
b . S c a n n in g o f th e p a p e r o r ig in a ls to a s ta n d a r d d ig ita l r a s te r ima g e f o r ma t s u c h
a s CCI T T G r o u p 4 ( CA L S , MI L - R- 2 8 0 0 2 ) a n d th e n u s in g a d ig ita l s to r a g e
s y s t e m t o a r c h i v e t h e r e s u l t i n g d a ta b a s e o f r a s te r ima g e s .
c.
Mic r o f ilmin g a n d s to r in g o n a p e r tu r e c a r d s w h e n r e q u e s te d b y a G S F C
d iv is i o n t h a t s t i l l h a s e q u ip me n t t o r e t r i e v e t h e i n f o r ma t i o n .
Note:
B e f o r e d e c i d in g t o a r c h i v e u s i n g a p e r t u r e c a r d s , t h e a v a i l a b i l i t y o f r e t r i e v a l
e q u i p me n t a n d t h e q u a l i t y o f r e p r o d u c t io n s h o u l d b e c o n s i d e r e d . T h e q u a l i t y
o f d r a w i n g s , l i s t s , a n d d o c u me n t s s h a l l me e t t h e l e g ib i l i t y a n d c o n tr a s t
r e q u ir e me n ts o f MI L - D - 5 4 8 0 a n d MI L - M- 9 8 6 8 . T h e mic r o f ilm s u p p lie d s h a ll
b e T yp e I , Cla s s 1 .
9.3.
Computer-Aided Design Drawings
T h e p u r p o s e o f th is s e c tio n is to s e t p o lic y o n h o w Co mp u te r - A id e d D e s ig n
( CA D ) d r a w in g s a r e to b e h a n d le d w h ile a c tiv e , s u p p lie d , d o c u me n te d , a n d
archived.
9.3.1.
Presentation of Computer-Generated Data
A c o mp u te r g r a p h ic s o r CA D p r o g r a m i s u s e d t o c r e a t e e l e c t r o n i c
d a ta f ile d r a w in g s . A p a p e r o r ig in a l is p r o d u c e d o n w h ic h d r a w in g
s i g n a t u r e r e q u i r e me n t s a r e p l a c e d . T h e e l e c t r o n i c d a t a f i l e mu s t b e
u p d a t e d t o i n c l u d e n a me s , i n i t i a l s , a n d d a t e s . T h e p a p e r o r i g i n a l i s
n o w th e a c tiv e o r ig in a l a n d is f ile d w ith th e c o n f ig u r a tio n ma n a g e r
( CM) , a lo n g w ith th e e le c tr o n ic d a ta f ile w h ic h mu s t b e u s e d f o r
future changes.
W h e n a r e v is io n is n e e d e d , a n E n g in e e r in g O r d e r ( E O ) p a p e r
o r i g i n a l i s w r i t t e n a n d s u b mi t t e d t o t h e C M f o r d is t r i b u t i o n a n d
f i l i n g . A f t e r n o mo r e t h a n f i v e o u ts t a n d in g E O s a r e w r i t t e n , a n e w
e le c tr o n ic CA D d r a w in g s h o u ld b e p r o d u c e d b y th e o r ig in a tin g
G S F C g r o u p o r c o n tr a c to r . T h e c h a n g e s s h a ll b e r e c o r d e d in th e
r e v is i o n b lo c k , d a t e d , a n d i n i t i a l e d . A n e w p a p e r o r i g i n a l w i t h t h e
changes incorporated, dated, and initialed, shall replace the
previous original in the CM file. The new original shall be so
s ta mp e d , d a te d , a n d s ig n e d b y th e CM r e p r e s e n ta tiv e .
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C A D d a t a f i l e s a r e t o b e s t o r e d o n me d i a t h a t a r e c o mp a t i b l e w i t h
c u r r e n t l y u s e d G S F C s y s t e ms . T h e s e me d ia i n c l u d e mu l t i t r a c k r e e l s
o f c o mp u te r ta p e o r f le x ib le d is k s ( 3 - 1 /2 ” o r 5 - 1 /4 ” d o u b le s id e ,
h ig h d e n s ity) . E a c h s to r a g e me d iu m ma y c o n ta in o n e o r mo r e f ile s .
T h e f o l l o w i n g s h a l l a c c o mp a n y e a c h s t o r a g e r e q u e s t :
a.
A c o mp u t e r - g e n e r a t e d l i s t o f i n f o r ma t i o n c o n t a i n e d o n e a c h
p i e c e o f s t o r a g e me d i u m ( f o r e x a mp l e : n u mb e r , d r a w i n g s i z e ,
etc.).
b . T h e b r a n d n a me o f t h e c o mp u t e r a n d s o f t w a r e u s e d t o c r e a t e t h e
f ile s , a n d th e s o f tw a r e v e r s io n n u mb e r if p r a c tic a l.
G S F C r e q u ir e s th a t CA D d a ta b e c o n v e r te d to a s ta n d a r d f o r ma t,
s u c h a s t h e D r a w i n g I n t e r c h a n g e F i l e ( D X F ) o r I n i t i a l G r a p h ic s
Exchange Specification (IGES). Refer to the National Institute for
S ta n d a r d s a n d T e c h n o lo g y f o r th e la te s t v e r s io n o f I G E S . T h is typ e
o f f o r ma t a llo w s th e CA D d a ta to b e r e a d b y d if f e r e n t typ e s o f CA D
s y s t e ms . F o r a t e c h n i c a l o v e r v i ew o f I G E S , r e f e r t o t h e N a t i o n a l
Bu r e a u o f S ta n d a r d s p u b lic a tio n , N BS I R8 1 - 2 2 9 , A T e c h n i c a l
B r i e f i n g o n t h e I n i t i a l G r a p h i c s E x c h a n g e.
9.3.2.
Developing and Using Computer-Generated
Drawings
A ll q u e s tio n s r e g a r d in g th e la te s t in f o r ma tio n s ys te ms a n d
a p p lic a tio n s s h o u ld b e d ir e c te d to th e Co mp u te r - A id e d D e s ig n
S e c t i o n o f t h e M e c h a n i c a l En g in e e r in g Br a n c h . D r a w in g s
g e n e r a te d b y c o mp u te r mu s t b e to s c a le p e r s e c tio n 3 . 4 o n p a g e 3 2
o f t h i s ma n u a l .
9.3.3.
Specification Data
T h e A me r i c a n N a t i o n a l S t a n d ar d s I n s t i t u t e p u b l i c a t i o n , D i g i t a l
Representation for Communication of Product Definition Data
( A N S I Y 1 4 . 2 6 M- 1 9 8 7 a n d u p d a te s ) , s h o u ld b e c o n s u lte d to
e s ta b lis h a s ta n d a r d d a ta c o mmu n ic a tio n s f o r ma t.
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10.
DESIGN REFERENCES, STANDARDS, AND
SPECIFICATIONS
10.1.
Dimensioning and Tolerancing
10.1.1.
85
Dimensioning and Tolerancing Practices
T h e d ime n s io n in g a n d to le r a n c in g f o r a ll typ e s o f d r a w in g s s h a ll b e
in accordance with ANSI Y14.5M-1982 (or later revisions). Copies
are available from
A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e
1 4 3 0 Br o a d w a y
New York, NY 10018
A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s
3 4 5 E . 4 7 th S tr e e t
New York, NY 10017
10.1.2.
Statements on Dimensioning
a.
D i me n s i o n s s h a l l b e c h o s e n a n d p l a c e d o n d r a w i n g s b a s e d o n
th e p a r ts in te r r e la tio n s h ip s w ith ma tin g p a r ts , n o t to
i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s .
b . P r ima r y, s e c o n d a r y, a n d te r tia r y d a tu m f e a tu r e s s h a ll b e la b e le d
in a lp h a b e tic a l o r d e r w h e n c r e a tin g a n e w d r a w in g .
c.
D r a w in g s o f p a r ts r e q u ir in g te mp la te s in th e f a b r ic a tio n p r o c e s s
a n d th e ir te mp la te d r a w in g s mu s t b e d ime n s io n e d a lik e . Re f e r to
to o lin g r e q u ir e d n o te s in “ D ime n s io n N o te s , ” p a r a g r a p h 2 . 4 . 4 . 1
on page 16.
d . U s e a min imu m o f r e f e r e n c e d ime n s io n s o n d r a w in g s .
e.
W h e n u s in g tr u e p o s itio n d ime n s io n in g * , th e d ime n s io n f r o m
th e f e a tu r e to o th e r e d g e s a n d its p e r p e n d ic u la r ity r e la tio n s h ip
t o a s u r f a c e mu s t b e i d e n t i f i e d w i t h d a t u m l e t t e r s . I mp l i e d
d a tu ms ( w h e n n o d a tu m le tte r ( s ) a r e s p e c if ie d ) a r e n o lo n g e r
acceptable.
* b a s i c , o r t h e o r e t i c a l l y e xa c t d ime n s io n s ; e x a mp le :
X.XXX
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10.2.
ENGINEERING DRAWING STANDARDS MANUAL
Metric Dimensioning
N MI 8 0 1 0 . 2 A , U s e o f th e M e tr ic S y s te m o f M e a s u r e m e n t in NA S A P r o g r a m s,
e s ta b lis h e s p o lic y a n d r e q u ir e me n ts f o r u s e o f th e me tr ic me a s u r e me n t s ys te m
( a ls o k n o w n a s th e I n te r n a tio n a l S ys te m o f U n its , o r S I ) in N A S A p r o g r a ms a n d
th e c o n d itio n s u n d e r w h ic h b o th E n g lis h a n d me tr ic me a s u r e me n ts ma y b e u s e d .
W h e n me tr ic d ime n s io n in g is to b e u s e d , th e d o c u me n ts A S T M E 3 8 0 - 9 1 a ,
S ta n d a r d P r a c tic e fo r U s e o f th e I n te r n a tio n a l S y s te m o f U n its (S I ), a n d
N A S 1 0 0 0 0 , NA D o c u m e n ts P r e p a r a tio n a n d M a in te n a n c e in S I (M e tr ic ) U n its ,
g iv e s p e c if ic in f o r ma tio n a n d c o n v e r s io n f a c to r s .
10.2.1.
SI Units and Symbols
a.
S I b a s e u n its a r e s e v e n w e ll- d e f in e d u n its th a t a r e r e g a r d e d a s
d ime n s io n a lly in d e p e n d e n t. T h e y a r e a s f o llo w s :
SI Base Units
Quantity
length
mass
time
electric current
thermodynamic temperature*
luminous intensity
amount of substance
Name
meter
kilogram
second
ampere
kelvin
candela
mole
Symbol
m
kg
s
A
K
cd
mol
S e le c te d L is t o f D e r iv e d U n its
Quantity
acceleration
angular acceleration
angular velocity
area
density, mass
electric charge
electric potential
electrical resistance
energy
force
frequency
magnetic flux
moment of force
power
pressure or stress
velocity
volume
Name or Unit
meter per second squared
radian per second squared
radian per second
square meter
kilogram per cubic meter
coulomb
volt
ohm
joule
newton
hertz
weber
newton meter
watt
pascal
meter per second
cubic meter
Symbol
m/s2
rad/s2
rad/s
m2
kg/m3
C
V
(Omega)
J
N
Hz
Wb
Nxm
W
Pa
m/s
m3
Formula
Axs
W/A
V/A
Nxm
kg x m/s2
1/s
Vxs
J/s
N/m2
-
*The SI temperature scale is the International Thermodynamic Kelvin Scale, symbol K. Degree
Celsius, symbol C, is for general use. The span of one degree Celsius is exactly one Kelvin.
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b . D ime n s io n in g a n d to le r a n c in g s h a ll b e in S I u n its a n d d e c ima l
f r a c t i o n s o f t h e u n i t . A l l l i n e a r d ime n s i o n s s h a l l b e i n
mi l l i me t e r s a n d d e c i ma l f r a c t i o n s o f mi l l i me t e r s . A l t h o u g h t h e
SI unit for the plane angle is the radian, angles stated in
d e g r e e s , min u te s , a n d s e c o n d s , o r in d e g r e e s a n d d e c ima l o f a
d e g r e e ( p r e f e r r e d ) , s h a ll b e u s e d w h e n d ime n s io n in g p a r ts . T h e
n u mb e r o f d e c i ma l p l a c e s i n t h e d i me n s i o n s h a l l b e t h e s a me a s
t h e n u mb e r o f p l a c e s i n t h e r e q u ir e d t o l e r a n c e . T h e r o u n d i n g o f
d i me n s i o n s a n d t o l e r a n c i n g s h al l b e i n a c c o r d a n c e w i t h s e c t i o n
1 0 . 2 . 2 . 2 o n p a g e 8 9 . D r a w in g s s h a ll b e d ime n s io n e d a n d
toleranced in accordance with ANSI Y14.5M-1982.
c.
S u r f a c e t e x t u r e v a l u e s s h a l l b e n o t e d i n mic r o me t e r s (µm) . S e e
t h e f o l l o w i n g t a b le :
Surface Texture Conversion Values
Micrometers
50
25
12.5
6.3
3.2
1.6
0.8
0.4
0.2
0.1
0.05
0.025
Microinches
2000
1000
500
250
125
63
32
16
8
4
2
1
Roughness
Grade
Numbers
N12
N11
N10
N9
N8
N7
N6
N5
N4
N3
N2
N1
d. Forces, such as tensile and shear loads, shall be shown in
n e w to n s ( N ) .
e.
S tr e s s e s s h a ll b e s h o w n in me g a p a s c a ls ( MP a = P a x 1 0 6 ) . T h e
f o llo w in g ta b le g iv e s e x a mp le s :
U l t i ma t e S t r e n g th
English (PSI)
Tensile
85,000
125,000
160,000
180,000
220,000
260,000
f.
S I ( MP a )
Shear
50,000
75,000
95,000
110,000
132,000
156,000
Tensile
600
900
1,100
1,250
1,550
1,800
Shear
340
540
660
750
930
1,080
P r e s s u r e v a lu e s f o r liq u id a n d g a s s h a ll b e s h o w n in k ilo p a s c a ls
(kPa = Pa x 103 ).
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g . Ma s s v a lu e s s h a ll b e s h o w n in k ilo g r a ms ( k g ) .
h . P r e f e r r e d d i a me t e r / p i t c h c o mb i n at i o n s f o r t h r e a d e d f a s t e n e r s a r e
shown in the following table, in accordance with ISO/TC20/SC4
Re s o lu tio n s 1 6 9 a n d 2 2 0 .
Dash Numbers
Thread Size
1.0 x 0.25
1.2 x 0.25
1.6 x 0.35
Nominal Size
-010
-012
-016
First
Oversize
(0.5 mm)
-
2.0 x 0.40
2.5 x 0.45
3.0 x 0.50
-020
-025
-030
-
-
3.5 x 0.60
4.0 x 0.70
5.0 x 0.80
-035
-040
-050
-055
-
6.0 x 1.0
7.0 x 1.0
8.0 x 1.0
-060
-070
-080
-065
-075
-085
-090
10.0 x 1.25
12.0 x 1.25
14.0 x 1.50
-100
-120
-140
-105
-125
-145
-110
-130
-150
16.0 x 1.50
18.0 x 1.50
20.0 x 1.50
-160
-180
-200
-165
-185
-205
-170
-190
-210
22.0 x 1.5
24.0 x 2.0
27.0 x 2.0
-220
-240
-270
-225
-245
-275
-230
-250
-280
30.0 x 2.0
33.0 x 2.0
36.0 x 2.0
39.0 x 2.0
-300
-330
-360
-390
-305
-335
-365
-395
-310
-340
-370
-400
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Oversize
(1 mm)
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i.
T h e to le r a n c e b lo c k o n th e G S F C d r a w in g f o r ma t s h a ll b e in
a c c o r d a n c e w i t h t h e f o r ma t e x a mp l e i n F i g u r e 2 b o n p a g e 6 .
T o le r a n c e s g iv e n in th e f o r ma t ma y b e a d j u s t e d t o r e f l e c t t h e
r e q u ir e me n ts o f th e d e s ig n .
j.
P r e f e r r e d M e t r i c L i m i t s & F i t s ( A N S I B4 . 2 - 1 9 7 8 ) e n c o mp a s s e s
to le r a n c e r e q u ir e d d e s ig n a tio n s , p r e f e r r e d limits , b a s ic s iz e s ,
a n d s ymb o ls .
k . G e n e r a l T o le r a n c e s fo r M e tr ic D im e n s io n e d P r o d u c ts ( A N S I
B4 . 3 - 1 9 7 8 ) is u s e d f o r me tr ic d ime n s io n s w ith o u t to le r a n c e
d e s ig n a tio n s .
10.2.2.
Unit Conversions
10.2.2.1.
Conversion of Dimensions
F o llo w in g is a ta b le o f s e le c te d c o n v e r s io n f a c to r s . I f f u r th e r c o n v e r s io n f a c to r s
a r e n e e d e d , t h e r e f e r e n c e s o u t l i n e d i n p a r a g r a p h 1 0 . 2 o n p a g e 8 6 a r e v e r y u s e f u l.
To Convert From:
inch
in2
foot
ft2
lb
lbf/in2 (psi)
degrees Fahrenheit
degrees Fahrenheit
To:
meter
m2
meter
m2
kg
Pa
degrees Celsius
kelvin
Multiply By:
2.540000 E–2*
6.451600 E–4*
3.048000 E–1*
9.290304 E–2*
4.5359237 E–1*
6.894757 E3
tC = (tF – 32)/1.8*
tK = (tF + 459.67)/1.8*
* E x a c t c o n v e r s io n
10.2.2.2.
Unit Rounding
a.
G e n e r a l Ro u n d in g Ru le s
W h e n a f ig u r e is to b e r o u n d e d to f e w e r d ig its th a n th e to ta l
n u mb e r a v a ila b le a n d th e f ir s t d ig it d is c a r d e d is le s s th a n 5 , th e
la s t d ig it r e ta in e d s h o u ld n o t b e c h a n g e d . F o r e x a mp le ,
3 . 4 6 3 2 5 , i f r o u n d e d t o t h r e e d e c i ma l p l a c e s ( i . e . , 4 s i g n i f i c a n t
d ig its o r s imp ly 4 d ig its ) , w o u ld b e 3 . 4 6 3 ; if r o u n d e d to th r e e
s ig n if ic a n t d ig its , 3 . 4 6 .
W h e n t h e f i r s t d ig i t d is c a r d e d i s g r e a t e r t h a n 5 , o r i f i t i s a 5
f o llo w e d b y a t le a s t o n e d ig it o th e r th a n 0 , th e la s t d ig it
r e ta in e d s h o u ld b e in c r e a s e d b y o n e u n it. F o r e x a mp le 8 . 3 7 6 5 2 ,
if r o u n d e d to f o u r d ig its , w o u ld b e 8 . 3 7 7 ; if r o u n d e d to th r e e
d ig its , 8 . 3 8 .
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W h e n th e f ir s t d ig it d is c a r d e d is e x a c tly 5 , f o llo w e d o n ly b y
zeros, the last digit retained (i.e., the digit preceding the 5,
u n d e r lin e d in th e e x a mp le s b e lo w ) s h o u ld b e r o u n d e d u p w a r d if
it is a n o d d n u mb e r , b u t n o a d j u s tme n t ma d e if it is a n e v e n
n u mb e r . F o r e x a mp le , 4 . 3 6 5 , w h e n r o u n d e d to th r e e s ig n if ic a n t
d ig its , b e c o me s 4 . 3 6 . T h e n u mb e r 4 . 3 5 5 w o u ld a ls o r o u n d to
th e s a me v a lu e , 4 . 3 6 , if r o u n d e d to th r e e s ig n if ic a n t d ig its .
T h is p r o c e d u r e is k n o w n a s “ o d d - e v e n r o u n d in g . ”
E x a mp le : Ro u n d 4 6 . 0 2 5 0 0 t o t w o d e c i ma l p l a c e s .
Answer:
46.02
E x a mp le : Ro u n d 4 1 . 2 7 5 0 0 t o t w o d e c i ma l p l a c e s .
Answer:
41.28
G e n e r a l l y , t h e a c c u r a c y o f t h e n u mb e r o f s i g n i f i c a n t d i g i t s t o
w h ic h a v a lu e is to b e r o u n d e d mu s t b e k n o w n b e f o r e a
c o n v e r s io n f a c to r is u s e d . I f th is is n o t k n o w n , th e n th e b e s t
r u le o f th u mb is to r o u n d th e f in a l v a lu e to th e n u mb e r o f
s ig n if ic a n t d ig its c o r r e s p o n d in g to th e le a s t n u mb e r o f
s ig n if ic a n t d ig its o f th e o r ig in a l, u n c o n v e r te d n u mb e r s . F o r
e x a mp le , to c o n v e r t 1 1 . 4 f e e t ( f t) to me te r s ( m) :
1 1 . 4 x 0 . 3 0 4 8 = 3 . 4 7 4 7 2 , w h ic h r o u n d s to 3 . 4 7 me te r s . N e ith e r
t h e c o n v e r s i o n f a c t o r n o r t h e q u an t i t y s h a l l b e r o u n d e d b e f o r e
p e r f o r mi n g t h e mu l t i p l i c a t i o n , b e c a u s e a c c u r a c y w o u l d b e
r e d u c e d . F o r c o n v e r t i n g i n c h e s ( i n ) t o mi l l i me t e r s ( mm) , w h i c h
w o u ld g e n e r a lly b e th e c a s e in d r a w in g s , th e r u le o f th u mb is to
r o u n d t o o n e l e s s d e c i ma l p l a c e t h a n t h e o r i g i n a l i n c h
d i me n s i o n . W h e n c o n v e r t i n g f r o m mi l l i me t e r s t o i n c h e s , t h e
r u l e i s t o r o u n d t o t w o mo r e de c i ma l p l a c e s t h a n t h e o r i g i n a l
v a lu e .
E x a mp l e : C o n v e r t 3 . 5 7 4 8 i n c h e s t o mi l l i me t e r s .
3.5748 x 25.4 = 90.79992
A n s w e r : 9 0 . 8 0 0 mm
E x a mp l e : C o n v e r t 1 . 6 2 5 i n c h e s t o mi l l i me t e r s .
1.625 x 25.4 = 41.275
A n s w e r : 4 1 . 2 8 mm
E x a mp l e : C o n v e r t 1 0 1 . 8 3 mi l l i me t e r s t o i n c h e s .
1 0 1 . 8 3 /2 5 . 4 = 4 . 0 0 9 0 5 5 1 1 8 A n s w e r : 4 . 0 0 9 1 in c h e s
b . Ro u n d in g Ba s ic D ime n s io n s
T o c o n v e r t b a s ic d ime n s io n s o f d r a w in g s f r o m in c h e s to
mi l l i me t e r s , t h e c o n v e r t e d v a l u e s h a l l b e r o u n d e d t o t h r e e
d e c i ma l p l a c e s s i n c e t h i s s h al l p r o v i d e a ma x i mu m c o n v e r s i o n
e r r o r o f 0 . 0 0 0 0 2 in c h . I n c o n v e r tin g b a s ic d ime n s io n s f r o m
mi l l i me t e r s t o i n c h e s , t h e v a l u e s h a l l b e r o u n d e d t o f i v e d e c i ma l
p l a c e s , g i v i n g a ma x i mu m c o n v er s i o n e r r o r o f 0 . 0 0 0 0 0 5 i n c h .
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Ro u n d in g T o le r a n c e d D ime n s io n s
T h e u s e o f t h e e x a c t r e l a t i o n 1 i n c h = 2 5 . 4 mi l l i me t e r s g e n e r a l l y
p r o d u c e s mo r e th a n th e r e q u ir e d n u mb e r o f s ig n if ic a n t d ig its .
T o r o u n d b o th th e d ime n s io n a n d th e to le r a n c e s , f ir s t c o n v e r t
th e v a lu e s to th e n e c e s s a r y u n its . W h e n c o n v e r tin g f r o m in c h e s
t o mi l l i me t e r s , mu l t i p l y b y 2 5 . 4 f o r a p r o d u c t ; w h e n c o n v e r t i n g
f r o m mi l l i me t e r s t o i n c h e s , d i v i d e b y 2 5 . 4 f o r a q u o t i e n t . N e x t ,
take the total tolerance (i.e., the total value between the
ma x imu m a n d min imu m limits ) a n d f r o m th e r e s p e c tiv e ta b le
b e l o w f i n d t h e c o r r e c t n u mb e r o f d e c i ma l p l a c e s . T h e n r o u n d
b o th th e d ime n s io n a n d th e to le r a n c e s to th e n u mb e r o f d e c ima l
p l a c e s i n d i c a t e d . H o w e v e r , c a r e mu s t b e t a k e n s o t h a t t h e
r o u n d e d to le r a n c e s f a ll in s id e th e o r ig in a l to le r a n c e v a lu e s a s
e x p la in e d in p a r a g r a p h 1 0 . 2 . 2 . 2 . d . , “ P r e c is io n Ro u n d in g , ” o n
page 92.
Original Total Tolerance in Inches
At Least:
0.4 & over
0.04
0.004
0.0004
0.00004
But Less Than:
0.4
0.04
0.004
0.0004
Round Product To:
Whole mm
0.X mm
0.XX mm
0.XXX mm
0.XXXX mm
Original Total Tolerance in Millimeters
At Least:
2.0 & over
0.2
0.02
0.002
But Less Than:
2.0
0.2
0.02
Round Quotient To:
0.XX in
0.XXX in
0.XXXX in
0.XXXXX in
E x a mp l e : C o n v e r t 1 . 3 8 7 ± 0 . 0 0 3 i n c h e s t o mi l l i me t e r s .
1.387 x 25.4 = 35.2298;
0.003 x 25.4 = 0.0762
35.2298 ± 0.0762
T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 6 , w h ic h lie s b e tw e e n 0 . 0 0 4
a n d 0 . 0 4 , a n d a c c o r d i n g t o t h e f ir s t t a b l e , s h o u l d b e r o u n d e d t o
0 . X X mi l l i me t e r .
A n s w e r : 3 5 . 2 3 ± 0 . 0 8 mm
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d . P r e c is io n Ro u n d in g ( I n s id e )
W h e n c o n v e r t e d , t o l e r a n c e s mu s t n e v e r e x c e e d t h e o r i g i n a l l y
s p e c if ie d limits ( a s in th e c a s e w h e r e th e “ c o n v e r te d ” p a r ts a r e
to b e in s p e c te d b y g a g e s ma d e f o r th e o r ig in a l p a r ts ) . T h e
r o u n d - o f f mu s t b e s u c h th a t th e n e w d ime n s io n s s h a ll lie in s id e
t h e o r i g i n a l t o l e r a n c e l i mi t s . T h i s ma y b e a c c o mp l i s h e d b y
c o n v e r tin g th e ma x imu m a n d min imu m limits e x a c tly, a n d th e n
r o u n d in g th e u p p e r limit to th e n e x t lo w e r v a lu e a n d r o u n d in g
t h e l o w e r l i mi t t o t h e n e x t h ig h e r v a l u e .
E x a mp l e : C o n v e r t
0 . 8 7 7 f r o m i n c h e s t o mi l l i me t e r s w i t h o u t
0.874
v io la t i o n o f t h e o r i g i n a l l i mi t s :
0.877 x 25.4 = 22.2758;
0.874 x 25.4 = 22.1996
T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 3 , w h ic h lie s b e tw e e n 0 . 0 0 0 4
and 0.004 and, according to the preceding table, should be
r o u n d e d t o 0 . X X X mi l l i me t e r s .
Answer:
2 2 . 2 7 5 mm
2 2 . 2 0 0 mm
N o t e t h a t 2 2 . 2 7 5 8 i s n o t r o u n d e d t o 2 2 . 2 7 6 mm b e c a u s e i t w o u l d
violate the “inside” rule.
10.3.
Design References
a.
F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s : M I L - S T D - 1 7 1 . R e f e r e n c e d o c u me n t
( f o r a w o r k in g k n o w le d g e ) : MI L - H D BK - 1 3 2 A .
b . G e a r s /G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g
Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( in c lu d in g me tr ic
e q u iv a le n ts ) : A G MA 2 0 0 0 - A - 8 8 .
c.
G e a r Cla s s if ic a tio n , Ma te r ia ls , a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id ,
F in e P itc h W o r mg e a r in g , a n d Ra c k s O n ly a s U n a s s e mb le d G e a r s :
A G MA 3 9 0 . 0 3 A - 8 8 .
d . O p tic s /G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r e , A s s e mb ly, a n d
I n s p e c tio n o f O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts : MI L - O - 1 3 8 3 0
.
e.
S o ld e r in g /G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( f o r n o n e le c tr ic a l
a p p lic a tio n s ) : MI L - S - 6 8 7 2 .
f.
S p r in g s /D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s : MI L - S T D - 2 9 .
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10.4.
93
Control of Surface Roughness
10.4.1.
Surface Texture
Surface texture, surface roughness, waviness, and lay shall be in
accordance with ANSI B46.1-1985 (or later revisions). The
s ymb o ls b e lo w a r e e x a mp le s o f mic r o in c h f in is h s ymb o ls a n d th e ir
mic r o me t e r e q u i v a l e n t s t h a t a r e mos t c o mmo n l y u s e d . R e f e r t o t h e
A N S I B4 6 . 1 - 1 9 8 5 f o r f u r th e r d a ta s u c h a s w a v in e s s a n d la y. Me tr ic
e q u iv a le n ts w ith r o u g h n e s s g r a d e n u mb e r s to th e f o llo w in g a r e
f o u n d in p a r a g r a p h 1 0 . 2 . 1 c o n p a g e 8 7 .
Mic r o in c h
Mic r o me te r
Ro u g h Ma c h in in g .
Mating Surfaces.
Mo v in g P a r ts .
Precision Parts.
P o lis h e d P a r ts .
L a p p e d P a r ts .
10.4.2.
Surface Texture Symbols
S y mb o l s d e p i c t i n g a c c e p t a b l e s u r f a c e c o n d i t i o n s s h a l l b e i n
accordance with ANSI Y14.36-1978 (R 1987) (or later revisions).
10.4.3.
Surface Texture Standards
Co p ie s o f b o th A N S I B4 6 . 1 - 1 9 8 5 a n d A N S I Y 1 4 . 3 6 - 1 9 7 8 a r e
available from
A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e
1 4 3 0 Br o a d w a y
New York, NY 10018
10.5.
Thread Specifications
S c r e w - th r e a d c o n v e n tio n s , me th o d s o f s p e c if yin g , a n d d e s ig n s h a ll b e in
accordance with the following specifications:
a.
Screw-Thread Standards for Federal Services, Federal Standard
F E D - S T D - H 2 8 , d e ta ile d s ta n d a r d s a s f o llo w s :
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F E D - S T D - H 2 8 / 1 N o me n c l a t u r e , D e f i nitio n s , a n d L e tte r S ymb o ls f o r S c r e w
Threads.
F E D - S T D - H 2 8 / 2 U n i f i e d T h r e a d F o r m an d T h r e a d S e r i e s f o r B o l t s , S c r e w s ,
N u ts , T a p p e d H o le s , a n d G e n e r a l A p p lic a tio n s .
F E D - S T D - H 2 8 /3 U n if ie d T h r e a d s o f S p e c ia l D ia me te r , P itc h e s , a n d L e n g th s o f
E n g a g e me n t.
F E D - S T D - H 2 8 /4 Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l.
F E D - S T D - H 2 8 /5 U n if ie d Min ia tu r e S c r e w T h r e a d s .
F E D - S T D - H 2 8 /6 G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s .
F E D - S T D - H 2 8 /7 A me r ic a n S ta n d a r d P ip e T h r e a d s ( e x c e p t D r y s e a l a n d H o s e
Co u p lin g T yp e s ) .
F E D - S T D - H 2 8 / 8 D r ys e a l A me r i c a n S ta n d a r d P ip e T h r e a d s .
F E D - S T D - H 2 8 /9 G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s .
F E D - S T D - H 2 8 /1 0 A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e - H o s e Co u p lin g
Threads.
F E D - S T D - H 2 8 /1 1 H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t.
F E D - S T D - H 2 8 / 1 2 A c me T h r e a d s .
F E D - S T D - H 2 8 /1 3 S tu b A c me T h r e a d s .
F E D - S T D - H 2 8 /1 4 N a tio n a l Bu ttr e s s T h r e a d s .
F E D - S T D - H 2 8 /1 5 A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e lls o f
E l e c t r i c L a mp H o l d e r s a n d f o r S c r e w S h e l l s o f U n a s s e mb l e d L a mp B a s e s .
FED-STD-H28/16 Microscope Objective and Nosepiece Threads, 0.800—
3 6 A MO .
F E D - S T D - H 2 8 /1 7 S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s .
F E D - S T D - H 2 8 /1 8 P h o to g r a p h ic E q u ip me n t T h r e a d s .
F E D - S T D - H 2 8 /1 9 Mis c e lla n e o u s T h r e a d s .
F E D - S T D - H 2 8 / 2 0 I n s p e c t i o n M e t h o d s f or A c c e p t a b i l i t y o f U N , U N R , U N J , M ,
and MJ Screw-Threads.
F E D - S T D - H 2 8 /2 1 A Me tr ic S c r e w - T h r e a d S ta n d a r d s .
F E D - S T D - H 2 8 / 2 2 Me t r i c S c r e w - T h r e a d G a g e s .
b . G e n e r a l S p e c i f i c a t i o n f o r S c r e w T h r e a d s , S t a n d a r d , O p t i mu m S e l e c t e d S e r i e s ,
Military Specification MIL-S-7742.
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95
G e n e r a l Re q u ir e me n ts f o r P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m,
S y mb o l - A N P T , M i l i t a r y S p e c i f i c a t i o n M I L - P - 7 1 0 5 .
d . G e n e r a l S p e c if ic a tio n f o r S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith
I n c r e a s e d M i n o r D i a me t e r , Mi l i t a r y S p e c i f i c a t i o n M I L - S - 8 8 7 9 .
e.
Me tr ic S c r e w T h r e a d s M P r o f ile A N S I /A S ME B1 . 1 3 M- 1 9 8 3 .
f.
Me tr ic S c r e w T h r e a d s MJ P r o f ile A N S I B1 . 2 1 M- 1 9 7 8 .
g . S c r e w T h r e a d Re p r e s e n ta tio n s ( Co n v e n tio n s a n d Me th o d s o f S p e c if yin g ) ,
A me r ic a n N a tio n a l S ta n d a r d A N SI Y 1 4 . 6 - 1 9 7 8 , a n d A N S I Y 1 4 . 6 a M- 1 9 8 1
( Me tr ic S u p p le me n t) .
10.6.
Welding—Fusion and Resistance
10.6.1.
General
T h e s ta n d a r d d e f in itio n f o r th e t e r m “ w e l d ” i s a l o c a l i z e d
c o a l e s c e n c e o f me t a l s w h e r e c o a l e s c e n c e i s p r o d u c e d b y h e a t i n g t o
s u ita b le te mp e r a tu r e s , w ith o r w ith o u t th e a p p lic a tio n o f p r e s s u r e ,
a n d w i t h o r w i t h o u t t h e u s e o f f i l l e r me t a l . T h e f i l l e r me t a l e i t h e r
h a s a me ltin g p o in t a p p r o x ima te ly th e s a me a s th e b a s e me ta l o r h a s
a me ltin g p o in t b e lo w th a t o f th e b a s e me ta l b u t a b o v e 8 0 0 d e g r e e s
F . F o r s ta n d a r d w e ld in g s p e c if ic a tio n c a llo u ts , r e f e r to “ J o in in g
Me th o d N o te s , ” p a r a g r a p h 2 . 4 . 4 . 3 o n p a g e 1 8 .
10.6.2.
Basic Weld Symbols and Their Location
Significance
B a s i c w e l d s y mb o l s a n d t h e i r l o c a t i o n s i g n i f i c a n c e s h a l l b e i n
accordance with ANSI AWS A 2.4-86 (or later revisions).
Copies are available from
A me r i c a n W e l d i n g S o c i e t y
2 5 0 1 N W 7 th S tr e e t
Mia mi, F L 3 3 1 2 5
10.7.
Outgassing of Spacecraft Materials
N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g D a ta fo r
S e l e c t i n g S p a c e c r a f t M a t e r i a l s, c o v e r s a w id e r a n g e o f ma te r ia ls , in c lu d in g
a d h e s iv e s , c o mp o u n d s , c o a tin g s , in s u la tio n , a n d v a r io u s o th e r ma te r ia ls . A s
p r e s e n t e d , t h e d a t a r e p r e s e n t t h e “ t o ta l ma s s l o s s ” ( T M L ) a n d t h e “ C o l l e c t e d
Volatile Condensable Materials” (CVCM), as derived from tests at 398 K (125 C)
f o r 2 4 h o u r s in v a c u u m p e r A S T M E 5 9 5 - 8 4 .
T h e p u b lic a tio n c a n b e p u r c h a s e d a s d o c u me n t n u mb e r N - 8 8 - 1 0 1 1 7 f r o m
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N a tio n a l T e c h n ic a l I n f o r ma t i o n S e r v i c e ( N T I S )
5 2 8 5 P o r t Ro ya l Ro a d
S p r in g f ie ld , V A 2 2 1 5 1
10.8.
Standards and Specifications Index
10.8.1.
National Bureau of Standards
NBS IR81-229, A Technical Briefing on the Initial Graphics
Exchange Specification (IGES).
10.8.2.
Federal
Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 Co mme r c e
Co mmis s io n S a f e ty Re g u la tio n s
C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8
S e c tio n A : N a me to CA G E Co d e ; S e c tio n B: CA G E Co d e to
N a me ( f o r me r l y F S C M H 4 a n d F S C N M H 8 ) .
F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r S ymb o ls
for Screw Threads.
F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s f o r Bo lts .
F E D - S T D - H 2 8 /3 , U n if ie d T h r e a d s o f S p e c i a l D i a me t e r , P i t c h e s , a n d
L e n g th s o f E n g a g e me n t.
F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J
S ymb o l.
F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s .
F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s .
F E D - S T D - H 2 8 /7 , A me r ic a n S ta n d a r d P i p e T h r e a d s ( e x c e p t D r y s e a l
a n d H o s e Co u p lin g T yp e s .
F E D - S T D - H 2 8 / 8 , D r ys e a l A me r i c a n S t a n d a r d P i p e T h r e a d s .
F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s .
F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e Hose.
F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g
E q u ip me n t.
F E D - S T D - H 2 8 / 1 2 , A c me T h r e a d s .
F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s .
F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .
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F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w
S h e l l s f o r E l e c t r i c L a mp H o l d e r s & U n a s s e mb l e d L a mp B a s e s .
FED-STD-H28/16, Microscope Objective and Nosepiece Threads.
F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s .
F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s .
F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s .
FED-STD-H28/20, Inspection Methods for Acceptability of UN,
U N R , U N J , M, a n d MJ S c r e w - T h r e a d s .
F E D -S T D -H 2 8 /2 1 , Me tr ic S c r e w - T h r e a d S ta n d a r d s .
F E D - S T D - H 2 8 / 2 2 , Me t r i c S c r e w - T h r e a d G a g e s .
F E D -S T D -5 9 5 , Co lo r s .
Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r .
Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) .
Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t S te e l.
Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) .
Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l Re q u ir e me n ts
for.
Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d A llo y.
S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty
Re g u la tio n s .
10.8.3.
Industrial
A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k
T o le r a n c e s a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e
P itc h W o r mg e a r in g , a n d Ra c k s .
A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k
T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d
H e lic a l G e a r s ( I n c lu d in g Me tr ic E q u iv a le n ts ) .
A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m A llo ys .
A N S I A W S A 2 . 4 - 1 9 8 6 , S ymb o ls f o r W e ld in g a n d N o n d e s tr u c tiv e
T e s tin g .
A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile .
A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile .
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A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its .
A N S I B4 . 3 - 1 9 7 8 G e n e r a l T o le r a n c e s f o r Me tr ic D ime n s io n e d
P r o d u c ts .
ANSI B46.1-1985, Surface Texture (Surface Roughness, Waviness,
a n d L a y) .
A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .
A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms .
A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .
A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g .
A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r Co mmu n ic a tio n o f
Product Definition Data.
A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s .
A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g .
A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n .
A N S I Y 1 4 . 6 A M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic
S u p p le me n t) .
ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975, Graphic
S y mb o l s f o r E l e c t r i c a l an d E l e c t r o n i c s D i a g r a ms .
A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g a n d
L a yo u t D i a g r a ms U s e d i n A r c h i t e c t u r e a n d B u i l d i n g
Co n s tr u c tio n .
A S T M D 4 1 2 6 , V a p o r D e g r e a s in g .
A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e I n te r n a tio n a l
S y s t e m o f U n i t s ( T h e M o d e r n i z e d M e t r i c S y s t e m) .
A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s a n d
C o l l e c t e d V o l a t i l e C o n d e n s i b l e M at e r i a l s F r o m O u t g a s s i n g i n a
V a c u u m E n v ir o n me n t.
N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e —O u tg a s s in g
Data for Selecting Spacecraft Materials.
N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in S I
( Me t r i c ) U n i t s .
10.8.4.
Military
D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .
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MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m
Alloys.
MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys , N ic k e l
A llo ys , A lu min u m, a n d A lu min u m A llo ys .
MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m a n d
A lu min u m A llo ys .
MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e .
MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls .
MI L -D -5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l, Re p r o d u c tio n
R e q u i r e me n t s f o r .
MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys .
MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r .
M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m A l l o y s ,
Process for.
MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d
Surfaces.
MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d in .
MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n .
MI L -M-9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts , 3 5 MM,
R e q u i r e me n t s f o r .
MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) .
MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts ;
G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r in g , A s s e mb ly,
a n d I n s p e c tio n o f .
MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f .
MI L -P -7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m,
S ymb o l A N P T , G e n e r a l Re q u ir e me n t f o r .
MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y F o r ma t,
R e q u i r e me n t s f o r .
MI L -S -6 8 7 2 , G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( n o n electrical).
MI L -S -7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d S e r ie s ,
General Specification for.
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MI L -S -8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith
I n c r e a s e d M i n o r D i a me t e r ; G e n e r a l S p e c i f i c a t i o n f o r .
MI L -S T D -1 2 , A b b r e v ia tio n s .
MI L -S T D -2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s .
MI L - S T D - 1 0 0 , E n g in e e r in g D r a w in g P r a c tic e s .
M I L -S T D -1 7 1 , F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s .
MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d
Screws, Rocket and Missile Structures.
MI L -S T D -0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n .
MI L - S T D - 6 4 5 , D ip Br a z in g o f A lu min u m A llo ys .
MI L -S T D -2 1 5 4 , U ltr a s o n ic I n s p e c tio n .
M I L -S T D -2 2 1 9 , F u s i o n W e l d i n g f o r A e r o s p a c e A p p l i c a t i o n s .
MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g .
MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g .
MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d F in e
T h r e a d , S ta n d a r d D ime n s io n s f o r .
MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le
D ime n s io n s f o r a n d A s s e mb ly o f .
10.8.5.
NASA
G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r P a ylo a d s
Using the Space Transportation System (STS).
G S F C- G H B- 2 2 0 0 . 2 , S c ie n tif ic a n d T e c h n ic a l I n f o r ma tio n
Handbook.
G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s .
G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d Re q u ir e me n ts
and Guidelines.
G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts .
G S F C- S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n , A Co mp e n d iu m o f
G e n e r a l Re f e r e n c e D a ta f o r T e c h n ic a l W r itin g a n d E d itin g .
G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g S ta n d a r d s D e s ig n Ma n u a l.
N A S A Re f e r e n c e P u b lic a tio n RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g
Data for Selecting Spacecraft Materials.
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N H B 5 3 0 0 . 4 ( 3 A - l) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d E le c tr ic a l
Co n n e c tio n s .
N MI 8 0 1 0 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in N A S A
P r o g r a ms .
N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta , I n te r v e h ic u la r
Activities.
10.9.
Standards and Specifications Numerical Index
Specification
Page
A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n
H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r
U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( I n c lu d in g Me tr ic
E q u iv a le n ts ) .
92
A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n Ma te r ia ls a n d
Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h
W o r mg e a r in g , a n d Ra c k s .
92
A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m
Alloys.
19
A N S I A W S A 2 . 4 - 8 6 , S ymb o ls f o r W e ld in g a n d
N o n d e s tr u c tiv e T e s tin g .
95
A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile
95
Page
Specification
A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its .
89
ANSI B46.1-1985, Surface Texture (Surface Roughness,
W a v in e s s , a n d L a y) .
93
A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s
D ia g r a ms .
43
A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms .
43
A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .
43
A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g .
35
A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r
Co mmu n ic a tio n o f P r o d u c t.
84
A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s .
93
A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g .
1, 7, 16, 28, 85, 87, 107, 108
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A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n .
95
A N S I Y 1 4 . 6 a M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic
S u p p le me n t) .
95
ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975,
G r a p h i c S y mb o l s f o r E l e c t r i c a l a n d E le c tr o n ic D ia g r a ms .
43
A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g
a n d L a yo u t D ia g r a ms U s e d in A r c h ite c tu r e a n d Bu ild in g
Co n s tr u c tio n .
43
A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile
95
A S T M D 4 1 2 6 , V a p o r D e g r e a s in g .
20
A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e
International System of Units (The Modernized Metric
S ys te m) .
86
A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s
and Collected Volatile Condensible Materials From
O u tg a s s in g in a V a c u u m E n v ir o n me n t.
95
Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 , Co mme r c e
Co mmis s io n S a f e ty Re g u la tio n s .
22
C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n
H 4 /H 8 .
7, 72, 75
Page
Specification
D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .
18
F E D - S T D - 5 9 5 , Co lo r s
19
F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r
S ymb o l s f o r S c r e w T h r e a d s .
93
F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s
f o r Bo lts , S c r e w s , N u ts , T a p p e d H o le s , a n d G e n e r a l
A p p lic a tio n s .
93
F E D - S T D - H 2 8 / 3 , U n i f i e d T h r e a d s o f S p e c i a l D i a me t e r ,
P itc h e s , a n d L e n g th s o f E n g a g e me n ts .
93
F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s ,
U N J S ymb o l.
93
F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s .
93
F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w
Threads.
93
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F E D - S T D - H 2 8 / 7 , A me r i c a n S t a n d a r d P ip e T h r e a d s ( e x c e p t
D r ys e a l a n d H o s e Co u p lin g T yp e s ) .
93
F E D - S T D - H 2 8 /8 , D r ys e a l A me r ic a n S ta n d a r d P ip e T h r e a d s .
93
F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t
Threads.
93
F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d
F ir e - H o s e Co u p lin g T h r e a d s .
93
F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d
Cu ttin g E q u ip me n t.
93
F E D - S T D - H 2 8 /1 2 , A c me T h r e a d s .
93
F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s .
93
F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .
93
F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r
S c r e w S h e l l s o f E l e c t r i c L amp H o l d e r s a n d f o r S c r e w
S h e l l s o f U n a s s e mb l e d L a mp B a s e s .
93
FED-STD-H28/16, Microscope Objective and Nosepiece
T h r e a d s , 0 . 8 0 0 - 3 6 A MO .
93
F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s .
93
F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s .
93
Page
Specification
F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s .
93
FED-STD-H28/20, Inspection Methods for Acceptability of
U N , U N R , U N J , M, a n d MJ S c r e w - T h r e a d s .
94
F E D - S T D - H 2 8 /2 1 A , Me tr ic S c r e w - T h r e a d S ta n d a r d s .
94
F E D - S T D - H 2 8 /2 2 , Me tr ic S c r e w - T h r e a d G a g e s .
94
G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r
Payloads Using the Space Transportation System (STS).
20
G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s .
60
G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d
Re q u ir e me n ts a n d G u id e lin e s .
20
G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts .
14
G S F C S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n — A
Co mp e n d iu m O f G e n e r a l Re f e r e n c e D a ta .
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G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g D r a w in g S ta n d a r d s
Manual.
iii, 16, 21
MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m
Alloys.
19
MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys ,
N ic k e l A llo ys , A lu min u m, a n d A lu min u m A llo ys .
18
MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m
a n d A lu min u m A llo ys .
19
MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e .
19
MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls .
MI L - D - 5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l,
Re p r o d u c tio n Re q u ir e me n ts f o r .
MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys .
109
83
17, 18
MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r .
17
M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m
A l l o ys , P r o c e s s f o r .
17
MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d
Surfaces.
92
Page
Specification
MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d
In.
21
MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n . 2 0 , 1 0 9
MI L - M- 9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts ,
3 5 mm, Re q u ir e me n ts f o r .
83
MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) .
21
MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l
I n s tr u me n ts ; G e n e r a l S p e c if ic a tio n G o v e r n in g th e
Ma n u f a c tu r in g , A s s e mb ly, a n d I n s p e c tio n o f .
92
MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f .
21, 22
MI L - P - 7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l
F o r m, S ymb o l A N P T , G e n e r a l Re q u ir e me n ts f o r .
95
MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y
F o r ma t , R e q u i r e me n t s f o r .
83
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MI L - S - 6 8 7 2 , G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s
( n o n - e le c tr ic a l) .
92
MI L - S - 7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d
Series, General Specification for.
94
MI L - S - 8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t w ith
Increased Minor.
95
MI L - S T D - 0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n .
20
MI L - S T D - 1 2 , A b b r e v ia tio n s .
12
MI L - S T D - 1 0 0 E , E n g in e e r in g D r a w in g P r a c tic e s .
MIL-STD-171, Finishes of Metal and Wood Surfaces.
1
18, 92
MI L - S T D - 2 1 5 4 , U ltr a s o n ic I n s p e c tio n .
20
MIL-STD-2219, Fusion Welding for Aerospace
A p p lic a tio n s .
18
MI L - S T D - 2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l
S p r in g s .
92
MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d
Screws, Rocket and Missile Structures.
18
MI L - S T D - 6 4 5 , D ip Br a z in g o f A lu min u m A llo ys
18
Page
Specification
MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g .
22
MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g .
18
MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d
F in e T h r e a d , S ta n d a r d D ime n s io n s f o r .
21
MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le
D ime n s io n s f o r a n d A s s e mb ly o f .
21
N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e —
O u t g a s s i n g D a t a C o mp i l a t i o n o f S p a c e c r a f t M a t e r i a l s .
95
N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in
S I ( Me t r i c ) U n i t s .
86
N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 ,
O u t g a s s i n g D a t a f o r S e l e c t in g S p a c e c r a f t M a t e r i a l s .
NBS IR81-229, A Technical Briefing on the Initial Graphics
Exchange.
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105
95, 108
84
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106
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N H B 5 3 0 0 . 4 ( 3 A - 1 ) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d
E le c tr ic a l Co n n e c tio n s .
18
N MI 8 0 1 0 . 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in
N A S A P r o g r a ms .
86
N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta ,
Intervehicular Activities.
108
Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r .
18
Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) .
18
Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t
Steel.
19
Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) .
18
Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l
Re q u ir e me n ts f o r .
19
Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d
Alloy.
18
S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n
S a f e ty Re g u la tio n s .
22
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APPENDIX A. DESIGN REVIEW DOs AND DON'Ts
A ll d r a w in g s s h o u ld a d h e r e to th e f o llo w in g g u id e lin e s :
a.
D i m e n s i o n p a r t s c o r r e c t l y . D ime n s io n in g s h a ll b e to p r ima r y o r ma tin g
s u r f a c e s . U n w a n t e d b u i l d u p o f t o l e r a nc e s b e t w e e n ma t i n g s u r f a c e s s h o u l d b e
a v o id e d . D i me n s i o n s t o i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s c a n r e s u l t i n
mis t a k e s b y t h e ma c h i n i s t , a s w e l l a s t h e i n s p e c t o r s , b e c a u s e o f t h e mu l t i p l e
a d d itio n s a n d s u b tr a c tio n s r e q u ir e d to lo c a te th e f e a tu r e in r e la tio n to o th e r
f e a tu r e s . W h e n e v e r p o s s ib le , d ime n s io n s s h o u ld b e le f t to r ig h t a n d b o tto m to
t o p ( Q u a d r a n t I , a l l p o s i t i v e n u mb e r s ) o r f r o m d a t u ms e s t a b l i s h e d b y d e s i g n
r e q u ir e me n ts .
b . D o n o t d e t a i l w e l d m e n t p a r t s s e p a r a t e l y . S i n c e e a c h p a r t ma y b e f a b r i c a t e d
b y a d if f e r e n t ma n u f a c tu r e r , th e r e q u ir e d to le r a n c in g typ ic a lly c a n n o t b e me t,
r e s u ltin g in d e la ys a n d a d d itio n a l c o s t. D if f e r e n t p a r ts o f a w e ld me n t s h o u ld
b e d r a w n o n a n I n s e p a r a b le A s s e mb ly D r a w in g ( F ig u r e 2 0 o n p a g e 4 4 ) s o th a t
t h e o v e r a l l a s s e mb l y t o l e r a n c i n g i s t h e r e s p o n s i b i l i t y o f a s i n g l e ma n u f a c t u r e r .
c.
I m p l i e d d a t u m s a r e n o l o n g e r a l l o w e d . W h e n e v e r p o s s i b l e , s e l e c t d a t u ms
th a t a r e f u n c tio n a l to th e p a r t. A d a tu m s h o u ld a lw a ys b e a s s ig n e d to a
p h y s i c a l s u r f a c e o r a f e a t u r e o f s i z e . W h e n u s i n g t r u e p o s i t i o n d i me n s i o n i n g
( b a s ic d ime n s io n s ) , th e d ime n s io n s f r o m th e f e a tu r e to o th e r e d g e s a n d its
p e r p e n d i c u l a r i t y r e l a t i o n s h i p t o a s ur f a c e mu s t b e i d e n t i f i e d w i t h d a t u m
le tte r s . T h e c o mb in e d u s a g e o f p o s itio n a l to le r a n c in g w ith p lu s a n d min u s
me t h o d s a s r e l a t e d t o b a s i c d i me n s i o n ed p a t t e r n s i s d i s c o n t i n u e d a n d r e p l a c e d
w ith th e c o mp o s ite to le r a n c in g me th o d . Re f e r to A N S I Y 1 4 . 5 M- 1 9 8 2 ,
“ D ime n s io n in g a n d T o le r a n c in g . ”
Note:
A l t h o u g h t h e r e i s n o r e q u i r e me n t t h a t a l l h o l e s b e t r u e p o s i t i o n e d , i t i s
p r e f e r r e d th a t h o le p a tte r n s b e tr u e p o s itio n e d , r e g a r d le s s o f u s e , s in c e
to le r a n c in g s p e c if ie d in th e tr u e p o s itio n b lo c k is th e c o n tr o llin g f a c to r .
d. Drawings for parts produced using templates must be properly
d i m e n s i o n e d a n d t o l e r a n c e d . L a c k o f d ime n s io n in g ma y r e s u lt in in a d e q u a te
s tr e s s a n a lys is , f it c h e c k in g , a n d /o r in s p e c tio n . E n g in e e r in g a n d to o lin g
d r a w in g s s h o u ld b e d ime n s io n e d a lik e a n d r e la te d to o n e a n o th e r . Re f e r to
to o lin g r e q u ir e d n o te s in “ D ime n s io n N ote s , ” p a r a g r a p h 2 . 4 . 4 . 1 o n p a g e 1 6 .
e.
U s e t h e l i s t o f m a t e r i a l f o r m a t c o r r e c t l y . T h e a s s e mb ly n u mb e r d o e s n o t g e t
a n i t e m n u mb e r . W h i l e t h e ma t e r i a l i s p r o p e r l y a n i t e m o n t h e L i s t o f
Ma te r ia l, o n e n d p r o d u c t d r a w in g s , th e r e is n o n e e d to s p e c if y e ith e r th e
d r a w in g n u mb e r o r a n ite m n u mb e r in th e L is t o f Ma te r ia l if th e r e is o n ly o n e
p a r t o r ma t e r i a l . A n i t e m w i t h t h e s a me ma t e r i a l a n d s p e c i f i c a t i o n r e q u ir e s
o n ly o n e i t e m n u mb e r a n d “ A / R ” ( a s r e q u ir e d ) a s a q u a n t i t y . T h e v a r i o u s
ma t e r i a l s i z e s r e q u i r e d a r e i n d i c a t e d o n t h e f i e l d o f t h e d r a w i n g , a s i s t h e c a s e
o f in s e p a r a b le a s s e mb lie s ( w e ld me n ts , r iv e te d p a r ts , e tc . ) . D a s h n u mb e r s a r e
r e q u ir e d o n ly w h e n th e r e is a “ s h o w n ” ( o d d n u mb e r ) a n d “ o p p o s ite ” ( e v e n
n u mb e r ) , w h e n th e r e is mo r e th a n o n e a s s e mb ly v e r s io n , o r w h e n th e d r a w in g
i s o f a t a b u la t e d t y p e ( r e f e r t o t y p e s o f d r a w i n g s ) . M u l t i d e t a i l d r a w i n g s a r e
n o t a l l o w e d ( r e f e r t o “ D e t a i l D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 f o r
e x p la n a tio n ) .
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f.
D o n o t u s e “ S K ” ( s h o r t f o r s k e t c h ) o n a n y d r a win g t h a t is u s e d t o
m a n u f a c t u r e a p a r t . U s e o n ly G S F C d r a w in g n u mb e r s w h e n u s in g th e G S F C
d r a w in g f o r ma t; c o n tr a c to r d r a w in g n u mb e r s a r e u s e d o n th e c o n tr a c to r 's
d r a w i n g f o r ma t . T h e M e c h a n ic a l E n g in e e r in g Br a n c h d o e s n o t c h e c k o r g iv e
a p p r o v a l f o r d r a w in g s p r o d u c e d o n c o n tr a c to r f o r ma t. Co n tr a c ts s h o u ld
s p e c if y th a t th e c o n tr a c to r s h a ll s u p p ly c o p ie s o f c o mp a n y s p e c if ic a tio n s w h e n
u s in g c o n tr a c to r f o r ma ts .
g . S p e c i f y l o w - o u t g a s s i n g m a t e r i a l s . U s e lo w - o u tg a s s in g f ilm lu b r ic a n ts f o r
s p a c e f l i g h t h a r d w a r e w h e r e d i s a s s e mb l y i s l i k e l y a n d / o r g a l l i n g o f l i k e
ma te r ia ls is p o s s ib le . Re f e r to N A S A RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 ( o r la te r ) ,
O u t g a s s i n g D a t a f o r S e l e c t i n g S p a c e c r a f t M a t e r i a l s , o r to S e c tio n 1 0 ,
p a r a g r a p h 1 0 . 6 . 1 , p a g e 9 5 o f t h i s ma n u a l , “ O u t g a s s i n g o f S p a c e c r a f t
Materials.”
h . S p e c i f y t h e i d e n t i f i c a t i o n o f p a r t s . T o ma i n t a i n t r a c e a b i l i t y , a l l p a r t s s h o u l d
b e id e n tif ie d b y in k s ta mp in g w ith th e G S F C d r a w in g n u mb e r , r a th e r th a n b y
b a g g in g a n d ta g g in g . U s e o n ly lo w - o u tg a s s in g in k ( s p e c if y o r ig in a l s o u r c e )
a n d d o n o t o v e r c o a t. D o n o t s te e l s ta mp e n g r a v e , o r e tc h o n f lig h t h a r d w a r e
t o p r e v e n t ma t e r i a l s t r e s s c o n c e n t r a t i o n s. I d e n t i c a l p a r t s w i t h d i f f e r e n t u s e s
s h o u ld b e s e r ia liz e d .
i.
Specify the original manufacturer source of supply and complete address.
L i s t t h e o r i g i n a l s o u r c e a n d c o mp l e t e a d d r e s s i n t h e G e n e r a l N o t e s , a n d f l a g
them to the List of Material or Parts List.
j.
S p e c if y r e g a r d le s s o f f e a t u r e s ize wh e n a p p ly in g t o f ix e d lo c a t io n s .
Positional tolerance should be specified as “Regardless of Feature Size” when
a p p lyin g to th r e a d in s e r ts , ta p p e d h o le lo c a tio n s , a n d s lip f it d e s ig n s .
k . S p e c i f y l o o s e t o l e r a n c e s w h e r e p o s s i b l e . T h e u s e o f th e tr u e p o s itio n me th o d
o f d ime n s io n in g s h o u ld n o t b e mis ta k e n f o r a tig h te r to le r a n c in g c o n tr o l
s ys te m. T r u e p o s itio n to le r a n c in g c a n b e a s lo o s e a s th e a p p lic a tio n s h a ll
a l l o w . L o o s e t o l e r a n c e s ma k e i n s pe c t i o n e a s i e r a n d a l l o w f e w e r r e j e c t e d
p a r ts .
l.
S p e c i f y r a d i i a n d c h a m f e r s . E d g e r a d ii, in - p la n e c o r n e r r a d ii, a n d p r o tr u s io n
c h a mf e r s mu s t b e s p e c i f i e d t o s p a c e f l ig h t s t a n d a r d s i z e r eq u i r e me n t s . R e f e r
t o J o h n s o n S p a c e C e n t e r d o c u me n t N S T S 0 7 7 0 0 , V o l u me X I V , A p p e n d i x 9 ,
“ S y s t e m D e s c r i p t i o n a n d D e s i g n D a t a I n t e r v e h i c u la r A c t i v i t i e s , ” S e c t i o n 5 . 5 ,
“ C r e w E q u i p me n t S a f e t y, ” f o r s i z e r e q u i r eme n ts . S p e c i f y r a d i i a t t h e b o t t o m
o f c o u n te r b o r e s to p r e v e n t s h a r p c o r n e r s , w h ic h c o u ld d e v e lo p in to s tr e s s
c r a c k s , p a r tic u la r ly o n f lig h t p a r ts .
m. S p e c i f y i n t e r f e r e n c e r a n g e o n l y f o r p r e s s f i t s . O n ly th e a mo u n t “ . 0 0 0 X to
. 0 0 0 X i n t e r f e r e n c e ” s h o u l d b e s t a te d n e x t t o t h e i t e m c a l l o u t .
n . S p e c i f y a s f e w r e f e r e n c e d i m e n s i o n s a s p o s s i b l e . T o o ma n y r e f e r e n c e
d ime n s io n s ma k e c h e c k in g , in s p e c tio n , a n d c o s t e s tima tin g mo r e d if f ic u lt.
o . S p e c i f y p r o j e c t e d t o l e r a n c e zo n e d i m e n s i o n s w h e r e a p p l i c a b l e . A d d a
p r o j e c te d to le r a n c e z o n e d ime n s io n to th e tr u e p o s itio n to le r a n c e w h e n
s p e c if yin g th r e a d e d in s e r ts , ta p p e d h o le s , o r d o w e l p in s . Re f e r to A N S I
Y 1 4 . 5 M- 1 9 8 2 .
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p . S p e c i f y f a s t e n e r t o r q u e r e q u i r e m e n t s . T h e s e r e q u i r e me n t s ma y r e f e r t o a
p r o j e c t- d e v e lo p e d s p e c if ic a tio n n u mb e r , o r f a s te n e r s iz e a n d to r q u e
r e q u ir e me n ts c a n b e ta b u la te d in th e G e n e r a l N o te s a n d f la g g e d to ite m c a llo u ts in th e f ie ld o f th e d r a w in g .
q . A v o i d d o u b l e f i x a t i o n s . A p a tte r n o f c o u n te r s u n k h o le s in o n e p a r t a n d
ta p p e d h o le s in th e ma tin g p a r t le a v e s n o to le r a n c in g f o r e ith e r p a r t, r e s u ltin g
in b e n d in g s tr e s s e s in th e s c r e w . I f th e s itu a tio n s h a ll a llo w , c o u n te r b o r e o n e
of the parts and use a pan head screw. If not, drill out the second part and use
a n u t i n p l a c e o f t a p p e d h o l e s . M a t c h ed d r i l l i n g s h o u l d b e a v o i d e d b e c a u s e o f
loss of interchangeability.
r.
A v o i d s e v e r e g a l l i n g b e t w e e n l i k e m a t e r i a l s . T o a v o id s e v e r e g a llin g in
CRES-to-CRES fastener applications, consider the following possibilities:
U s e o f p h o s p h o r b r o n z e in s e r ts .
U s e o f d r y f ilm lu b r ic a n t p e r MI L - G - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t
Cu r e d , Co r r o s io n I n h ib itin g ( f o r CRE S in s e r ts a n d n u ts ) .
U s e o f b la c k o x id e c o a tin g p e r MI L - C- 1 3 9 2 4 ( f o r b o lts a n d s c r e w s ) .
s.
Avoid the use of internal, external, or split-ring lock washers. These types
of washers are not used on aerospace flight projects for several reasons; the
w o r s t is p o s s ib le p a r tic u la te c o n ta min a tio n .
t.
Avoid using silver-plated hardware around electronic applications. This
c a n c a u s e c o n t a mi n a t i o n p a r t i c l e s . H o w e v e r , i t i s a c c e p t a b l e f o r a l l o t h e r
a p p lic a tio n s .
u. Design a part so it can be made with the least amount of machine setups
possible.
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F o r a n a lp h a b e tic a l ( n u me r ic a l) lis tin g o f th e S ta n d a r d s a n d S p e c if ic a tio n s lis te d
in th is ma n u a l, s e e S e c tio n 1 0 . 9 , p a g e 1 0 1 .
A
D
Abbreviations ............................... 11, 12
AFBMA ............................................. 12
AGMA .............................................. 12
AGMA standard quality....................... 16
A l t e r e d p a r t s . . . . . . . . . . . . . . . . s e e P a r ts — V e n d o r
Altered vendor part drawings ...................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
ANSI ................................................ 12
Archiving .......................................... 80
ASME ............................................... 12
A s s e mb l y d r a w i n g s . . . . . . . . . . . . . . s e e D r a w in g s
Associated lists .................................. 80
ASTM ............................................... 13
AWS ............................................ 13, 92
B
B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . s e e D ime n s io n in g — T r u e p o s itio n
Brazing ............................................. 18
C
C A D . . . . . . . . . . . . . . . s e e Co mp u te r - a id e d d e s ig n
C A D - p r o d u c e d d r a w i n g s . . . . . . s e e D r a w in g s
Certification logs ............................... 80
C h a mf e r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 5
Coating Notes .......................... see Notes
C o mp o s i t e ma t e r i a l d r a w i n g . . . . . . . . . . . . . . . . 5 6
C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . 3 3 , 8 0
. . . . s e e a l s o Drawings—Computer-aided design
Data files
Media .......................................... 81
Presentation of data ......................... 80
Specification data ............................ 81
C o mp u t e r - g e n e r a t e d d a t a
Presentation of ................................ 80
C o n f i g u r a t i o n ma n ag e me n t o f f i c e r . . . . . . . . 5 8
C o n f i g u r a t i o n ma n a g e r . . . . . . . . . . . . . . . . . . . 5 8 , 8 0
C o n t r a c t o r d e s i g n a ct i v i t y d r a w i n g s . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
C o n v e r s i o n o f d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 6
C r o s s - h a t c h i n g s y mb o l . . . . . . . . . . . . . . . . . . . . . . . . 3 5
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Datum ..................................... 30, 45, 82
I mp l i e d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4
Design references ................................ 82
D e s i g n r e v i e w D o s a n d D o n 't s . . . . . . . . . . . . 1 0 4
Design Selection Guide ........................ 14
D e t a i l d r a w i n g s . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Details ............................................... 37
Identification ................................... 37
Locating .......................................... 38
D i a g r a ms
Electrical and electronic ................... 43
D i me n s i o n n o t e s . . . . . . . . . . . . . . . . . . . . . . . . s e e N o t e s
D i me n s i o n a l t o l e r a n c e n o t e s . . . . . . . s e e N o t e s
D ime n s io n in g
M e t r i c . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g
S t a t e me n t s o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2
True position .................... 82, 104, 105
D ime n s io n in g a n d to le r a n c in g . . 8 2 , 8 4 , 1 0 4
Metric ............................................. 83
Practices ......................................... 82
D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
... 15, 16, 24, 25, 28, 55, 82, 84, 88, 104
Conversion of .................................. 86
Projected tolerance zone ................. 106
Reference ...................................... 105
D o c u me n t a t i o n ma n a g e me n t . . . . . . . . . . . . . . . . . . 7 9
Double fixations ............................... 106
Drafting practices ............................... 25
D r a w i n g e l e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Drawing flow chart............ see Flow chart
D r a w i n g f o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
Drawing Interchange File ..................... 81
Drawing notes ...........................see Notes
D r a w i n g n u mb e r . . . . . . . . . . 1 , 7 , 1 0 , 4 1 , 5 8 , 6 0
Source control ................................. 53
Specification control ........................ 54
D r a w i n g r e v i s i o n s . . . . . . . . . . . . . . . s e e Re v is io n s
Drawing sizes ...................................... 3
Drawing title ...................................... 11
Drawing tree ....................................... 42
D r a w in g s
Archiving ........................................ 80
A s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0 , 5 3 , 5 4
CAD-produced .................................. 8
C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . . . . 8 0
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Developing and using .................... 81
Revisions ..................................... 80
Contractor design activity .................. 1
Detail ............................................. 41
E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3
Engineering .................... 1, 16, 58, 104
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
G o v e r n me n t D e s i g n A c t i v i t y . . . . . . . . . . . . . . . 1
I n s e p a r a b l e a s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . 4 4
I n s t a l l a t i o n a s s e mb l y . . . . . . . . . . . . . 4 5 , 5 3 , 5 4
Interface control ......................... 46, 47
Manufacturing ................................. 54
Matched-set .................................... 48
M e c h a n i c a l s c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . 4 9
Modification ................................... 50
Mo n o d e t a i l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4
Multidetail ...................................... 41
Multisheet .................... 3, 4, 15, 38, 65
Notes ................................... see Notes
N u mb e r i n g s y s t e m . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
One view ........................................ 25
Outline .................................50, 51, 54
Pencil............................................. 33
Positioning ..................................... 33
Redrawn or replaced ........................ 67
Scale .............................................. 32
Source control ............................ 52, 53
Specification control ..............52, 53, 54
Standard part .................................. 54
Tabulated ....................................... 54
Three view ...................................... 25
Tooling ................................8, 55, 104
Two view ........................................ 25
Types of ......................................... 39
Vendor part
Altered ........................................ 39
Selected ....................................... 39
Zoned .......................................... 4, 38
D X F . . . . . . . . . . . . s e e D r a w in g I n te r c h a n g e F ile
111
EFFECTIVE SERIAL ........................ 63
EO NO. ........................................... 63
F o r ma t s a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2
G e n e r a l r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . 6 2
INITIATED ..................................... 63
ISSUED BY ..................................... 63
NEXT ASSEMBLY ........................... 62
N u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4
PARTS IN PROCESS ...........................
. . . . s e e E n g in e e r in g o r d e r — D is p o s itio n
PROGRAM ...................................... 62
REASON ......................................... 62
REV ................................................ 62
REVIEWED ..................................... 63
S H E E T ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3
TITLE ............................................. 62
TYPE OF EO ................................... 63
USED ON ........................................ 62
Engineering parts list ........... see Parts list
E O . . . . . . . . . . . . . . . . . . . . . . . . . s e e E n g in e e r in g o r d e r
E P L . . . . . . . . . . . . . . . . s e e P a r ts lis t— E n g in e e r in g
F
Fastener torque ................................. 106
Federal Cataloging Program ................. 54
F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r . . . . . . . 5 4
Federal standards and specifications ...... 93
FIIN .....................................................
. s e e F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r
F i n d n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . . 7 6
Definition ........................................ 76
D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . 7 7
System of identification .................... 76
F i n d o r I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . s e e e i t h e r F in d n u mb e r o r I te m n u mb e r
F i n d o r i t e m n u mb e r i n g . . . . . . s e e N u mb e r in g
Flow chart
For drawings .................................... 79
E
E l e c t r i c a l a n d e l e c tr o n i c d i a g r a ms . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D i a g r a ms
E l e c t r i c a l a n d e l e c tr o n i c s y mb o l s . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls
E l e c t r i c a l / e l e c t ro n i c d r a w i n g s . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
E n g i n e e r i n g d r a w i n g s . . . . . . . . . . s e e D r a w in g s
Engineering order .......................... 62, 64
APPROVED .................................... 63
Archiving ....................................... 80
DESCRIPTION ................................ 63
Disposition ..................................... 63
DRAWING...................................... 62
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G
Galling ............................................ 106
G o v e r n me n t D e s i g n A c t i v i t y D r a w i n g s . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
H
Heat treating notes ....................see Notes
I
IEEE .................................................. 13
IGES.....................................................
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n i t i a l G r a p h ic s
........................ Exchange Specification
I L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n d e x lis t
Index list ........................................... 68
Continuation sheet ........................... 75
Entries ........................................ 74
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Cover sheet ..................................... 69
Entries ................................... 69, 70
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
Definitions ..................................... 68
Re q u ir e me n ts
A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
List preparation ............................ 68
Revision identification .................. 69
I n d u s tr ia l s ta n d a r d s a n d s p e c if ic a tio n s . . 9 5
I n f o r ma t i o n M a n a g eme n t D i v i s i o n . . . . . . . . 5 8
I n f o r ma t i o n a l n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s
I n i t i a l G r a p h ic s E x c h a n g e S p e c i f i c a t i o n 8 1
Ink lines ................................... see Lines
I n s e p a r a b l e a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Inseparable parts ....................... see Parts
Inside rounding ......................................
. . . . . . . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g —
........................... Rounding—Precision
Inspection notes ....................... see Notes
I n s t a l l a t i o n a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
I n t e r f a c e c o n t r o l d r a w i n g s . . . . s e e D r a w in g s
Interference range ............................. 105
International System of Units ..................
..................................................... 83
. . . . . . . . . . . . . . . . . . . . . . s e e a l s o 'S I ' a n d 'Me t r i c '
Introduction ......................................... 1
ISO ................................................... 13
I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . 7 6
Definition ....................................... 76
D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . 7 7
System of identification ................... 76
I t e m n u mb e r i n g . . . . . . . . . . . . . . . . . s e e N u mb e r in g
J
J roll size ............................................ 3
J o i n i n g me t h o d n o t e s . . . . . . . . . . . . . . . . s e e N o t e s
L
Lay (of a surface) ............................... 90
L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . 3 1
Heights........................................... 32
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Style ............................................... 31
Library Services Branch ....................... 58
Lines ................................................. 25
Conventions ............................... 26, 27
Ink ................................................. 25
Pencil ............................................. 27
Plotted ............................................ 25
Types ........................................ 26, 27
Break ........................................... 28
Center .......................................... 27
Cutting-plane ................................ 30
Datum .......................................... 30
D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8
Extension ..................................... 30
Hidden ......................................... 30
Leaders ........................................ 28
Outlines ....................................... 30
Phantom ....................................... 29
Sectioning .................................... 29
Stitch ........................................... 30
Viewing-plane ............................... 30
Visible ......................................... 30
List of Material ......................... 8, 10, 14
Entries ............................................ 78
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8 , 1 0 4
R e q u i r e me n t s i n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
LM ........................... see List of Material
Local character notes .................see Notes
Lock washers .................................... 106
L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . . . . 1 0 5
M
M a t c h e d - s e t d r a w i n g s . . . . . . . . . . s e e D r a w in g s
M a t e r ia l
Conventions ..................................... 35
Low-outgassing .............................. 105
Outgassing....................................... 93
Mechanical Engineering Branch ............ 58
M e c h a n i c a l s c h e ma t i c d i a g r a m d r a w i n g s . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Metric .................................... see also SI
Me tr ic d ime n s io n in g
Ro u n d in g
B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7
General rules ................................ 86
Precision ................................ 88, 89
T o l e r a n c e d d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 8
Unit conversions .............................. 86
Metric system ..................................... 83
M i l i t a r y s t a n d a r d s an d s p e c i f i c a t i o n s . . . . . 9 6
M o d i f i c a t i o n d r a w i n g s . . . . . . . . . s e e D r a w in g s
M u l t i s h e e t d r a w i n g s . . . . . . . . . . . . s e e D r a w in g s
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N
NAS .................................................. 13
NASA standards and specifications ...... 98
National Bureau of Standards index ...... 93
NEMA ............................................... 13
N o me n c l a t u r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
Notes ................................................ 25
Coating .......................................... 18
D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
D i me n s i o n a l t o l e r a n c e . . . . . . . . . . . . . . . . . . . . . . 2 4
E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
General .......................................... 15
Heat treating ................................... 17
I n f o r ma t i o n a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
Inspection ....................................... 20
J o i n i n g me t h o d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8
Local character .......................... 15, 23
Location ......................................... 15
Miscellaneous ................................. 21
N u mb e r i n g o f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
Plating ........................................... 18
Surface preparation.......................... 19
Testing ........................................... 20
Threaded inserts
Cleaning and installation ............... 21
Warning note .................................. 15
NSA .................................................. 13
NTIS ................................................. 93
N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
Find ............................................... 60
Item ............................................... 60
Parts .............................................. 59
N u mb e r i n g o f n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s
113
N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 9
Separable ........................................ 40
Vendor ................................. 52, 53, 59
Altered ................................... 39, 59
Selected ................................. 39, 59
W e l d me n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4
Parts list ...................................... 14, 68
Continuation sheet ............................ 73
Entries ......................................... 72
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
S u p p l e me n t a r y h e a d i n g l i s t . . . . . . . . . . . . . 7 3
Co v e r s h e e t
Entries ................................... 69, 70
F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
Definitions ...................................... 68
Engineering .......................... 59, 60, 80
Preferred ......................................... 14
Re q u ir e me n ts
A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9
List preparation ............................. 68
Revision identification ................... 69
P e n c i l d r a w i n g s . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Pencil lines .............................. see Lines
Picturization ....................................... 33
PL ...................................... see Parts list
Plating notes.............................see Notes
Plotted lines ............................. see Lines
Positioning ................................... 33, 35
Precision rounding .................................
. . . . . . s e e Me tr ic d ime n s io n in g — Ro u n d in g
Press fits .......................................... 105
Projected tolerance zone .................... 106
Projected views ........................ see Views
O
Order of precedence...... see Specifications
Orthographic projection ...................... 25
Outgassing
L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . 1 0 5
O f s p a c e c r a f t ma t e r i a l s . . . . . . . . . . . . . . . . . . . . 9 3
O u t l i n e d r a w i n g s . . . . . . . . . . . . . . . . . s e e D r a w in g s
Outlines
Invisible ......................................... 34
Visible ........................................... 34
P
P a r t n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 , 5 9
P a r t P o s i t i o n i n g . . . . . . . . . . . . . . . s e e P o s itio n in g
Parts
D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4
Identification of ............................. 105
Inseparable ..................................... 41
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R
Radii ............................................... 105
Regardless of Feature Size ................. 105
Revision block ............................ 4, 9, 65
APPROVAL ...................................... 9
DATE .............................................. 9
DESCRIPTION.................................. 9
S a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 , 6 6
SYM ................................................ 9
ZONE .............................................. 9
Revisions ........................................... 65
Identification ................................... 65
Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5
Multisheet drawings ......................... 65
Recording ........................................ 65
Redrawn or replaced drawings ........... 67
Rotated views .......................... see Views
Rounding ........................................... 86
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R o u n d i n g : . . . . s e e a l s o Me tr ic d ime n s io n in g
S
SAE .................................................. 13
Scale ................................................. 32
Sections ............................................ 34
Identification .................................. 37
Locating ......................................... 38
Security classification ................... 10, 15
S e l e c t e d p a r t s . . . . . . . . . . . . . . s e e P a r ts — V e n d o r
S e l e c t e d v e n d o r p ar t d r a w i n g s . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Separable parts ......................... see Parts
S h e e t n u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
S I . . . s e e a ls o I n t e r n a t i o n a l S y s t e m o f U n i t s
U n i t s a n d s y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3
Silver-plated hardware ....................... 106
Soldering...................................... 18, 89
S o u r c e c o n t r o l d r a w i n g s . . . . . . . s e e D r a w in g s
Space Transportation System ............... 20
Specification callouts ......................... 24
S p e c i f i c a t i o n c o n tr o l d r a w i n g s . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s
Specifications .................................... 82
Order of precedence ......................... 60
Subsequent changes ......................... 24
Thread....................................... 91, 92
Specifications index ...............................
. . s e e S ta n d a r d s a n d s p e c if ic a tio n s in d e x
S t a n d a r d p a r t d r a w i n g . . . . . . . . . . s e e D r a w in g s
Standards .......................................... 82
Order of precedence ......................... 60
S t a n d a r d s a n d s p e c i f ic a t i o n s i n d e x . . . . . . . 9 3
Federal ........................................... 93
Industrial........................................ 95
Military .......................................... 96
NASA ............................................ 98
National Bureau of Standards ............ 93
S ta n d a r d s a n d s p e c if ic a tio n s n u me r ic a l
index .............................................. 98
STS ....... see Space Transportation System
S u p p o r tin g d o c u me n ta tio n
N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
Surface preparation notes .......... see Notes
Surface roughness
Control of ....................................... 90
Surface texture ................................... 90
Standards........................................ 90
S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 0
S ymb o ls
Cross-hatching ................................ 35
E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3
Welding.......................................... 92
W ir i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3
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T
T a b u l a t e d d r a w i n g s . . . . . . . . . . . . . s e e D r a w in g s
T e mp l a t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 , 8 2 , 1 0 4
Testing notes ............................see Notes
Third-angle orthographic projection ...... 25
Thread specifications ..................... 91, 92
Threaded inserts—Cleaning and
installation notes ....................see Notes
Title block ............................ 4, 9, 32, 33
APPROVED ...................................... 7
CHECKED ........................................ 7
CODE .............................................. 7
DATE .............................................. 7
DESCRIPTION.................................. 9
DESIGNER ....................................... 7
Drawing No. ..................................... 7
DRAWN ........................................... 7
EXAMINATION ................................ 8
FLIGHT HARDWARE ........................ 8
HARDNESS TESTING ....................... 8
ITEM NO. ........................................ 8
MATERIAL ...................................... 9
MATERIAL SPEC. ............................ 9
METRIC ........................................... 8
NEXT ASSY ..................................... 8
PART NO. ........................................ 8
REQD .............................................. 8
S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SCALE ............................................. 7
S H ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Software used ................................... 8
TITLE .............................................. 7
USED ON ......................................... 7
WT .................................................. 7
T o le r a n c e Blo c k
Metric ............................................. 86
Tolerances .................. 24, 82, 84, 88, 104
Loose ............................................ 105
Metric ............................................. 86
T o le r a n c in g
True position ................................. 105
T o o l i n g d r a w i n g s . . . . . . . . . . . . . . . . s e e D r a w in g s
Tooling fixtures .................................. 55
Transported views .................... see Views
T r u e p o s i t i o n d i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D ime n s io n in g
U
U n i t n u mb e r p r i n c i p l e . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
U n i t r o u n d i n g . . . . . . . . . . . . . . . . . . . . . s e e Ro u n d in g
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115
V
Vapor degreasing ............................... 20
Vendor part .............................. see Parts
V e n d o r p a r t d r a w i n g s . . . . . . . . . . . s e e D r a w in g s
Views .......................................... 25, 36
Identification .................................. 37
Locating ......................................... 38
Projected ........................................ 36
Rotated........................................... 36
Sectional ........................................ 34
Designation .................................. 35
Positioning .................................. 35
Transported .................................... 36
W
Waviness (of a surface) ....................... 90
Welding ............................................ 18
General .......................................... 92
Notes ............................................. 18
Specification callouts....................... 92
S y mb o l s . . . . . . . . . . . . . . . . . . . . . s e e a l s o S ymb o ls
Location significance .................... 92
W e l d me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 , 1 0 4
W ir i n g s y mb o l s . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls
Z
Zoning ........................................... 4, 10
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