AN & MS Flared/Flareless Tube Hydraulic Fittings
Example of Part Numbers
PLUG
PLUG
Dash No.
Dash No.
AN806-D 8
MS21913D 4
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
‛S’ → CRES, Type 347
‛T’ → Titanium Alloy, 6AL-4V
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
Dash No.
MS21913- 4S
Material Code
‛S’ → CRES, Type 347
‛T’ → Titanium Alloy, 6AL-4V
TUBE OUTER Ø
1
⁄8
3
⁄16
1
⁄4
5
⁄16
3
⁄8
1
⁄2
5
⁄8
3
⁄4
HEX
DASH NO. WRENCH SIZE
2
7
2
7
3
7
3
7
4
7
4
⁄16
⁄16
20
2
24
2
28
3
2 ⁄8
-
-
32
5
32
2 5⁄8
1
16
1
1 ⁄4
20
1
24
3
1 ⁄4
2
⁄16
⁄16
1
⁄2
9
⁄16
5
⁄8
13
⁄16
15
⁄16
1 1⁄8
1 3⁄8
1 11⁄16
⁄16
1
⁄2
9
⁄16
3
⁄4
7
⁄8
1 1⁄8
1 3⁄8
1 11⁄16
1 ⁄2
HEX
DASH NO. WRENCH SIZE
5
6
8
10
12
2 ⁄8
Page 1 of 5
5
6
8
10
12
16
AN & MS Flared/Flareless Tube Hydraulic Fittings
Example of Part Numbers
CAP ASSY
CAP ASSY
Dash No.
Pre-fix ‛L’ → drilled nut for lockwire
MS21914-4D
AN929 - 8J
or ‛A’ → drilled cap for safety chain
Material Code
‛no letter’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
‛S’ → CRES, Type 347
‛T’ → Titanium Alloy, 6AL-4V
TUBE OUTER Ø
1
⁄8
3
⁄16
1
⁄4
5
⁄16
3
⁄8
1
⁄2
5
⁄8
3
⁄4
1
1 1⁄4
1 1⁄2
1 3⁄4
2
2 1⁄2
3
Dash No.
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
‛R’ → CRES, Type 321
‛T’ → Titanium Alloy, 6AL-4V
DASH NO.
DASH NO.
2
3
4
5
6
8
10
12
16
20
24
28
32
40
48
2
3
4
5
6
8
10
12
16
20
24
-
Page 2 of 5
HEX
WRENCH SIZE
3
⁄8
7
⁄16
⁄16
5
⁄8
11
⁄16
7
⁄8
1
1 1⁄4
1 1⁄2
2
2 1⁄4
2 5⁄8
2 7⁄8
3 3⁄8
4
9
AN & MS Flared/Flareless Tube Hydraulic Fittings
Example of Part Numbers
UNION
Dash No.
1
⁄8
⁄16
1
⁄4
5
⁄16
3
⁄8
1
⁄2
5
⁄8
3
⁄4
1
1 1⁄4
1 1⁄2
1 3⁄4
2
2 1⁄2
3
Dash No.
MS21902 D 4
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
Dash No.
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
Dash No.
MS21900- 4R
MS21902-4R
Material Code
‛R’ → CRES, Type 321
‛T’ → Titanium Alloy, 6AL-4V
Material Code
‛R’ → CRES, Type 321
‛T’ → Titanium Alloy, 6AL-4V
DASH NO.
DASH NO.
DASH NO.
2
3
4
5
6
8
10
12
16
20
24
28
32
40
48
3
4
5
6
8
10
12
16
20
24
32
-
2
3
4
5
6
8
10
12
16
20
24
32
-
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
‛S’ → CRES, Type 347
‛T’ → Titanium Alloy, 6AL-4V
3
Dash No.
UNION
MS21900D4
AN815- 8D
TUBE OUTER Ø
ADAPTER
Page 3 of 5
HEX
WRENCH SIZE
9
⁄16
5
⁄8
11
⁄16
3
⁄4
13
⁄16
1
1 1⁄8
1 3⁄8
1 5⁄8
1 7⁄8
2 1⁄8
2 1⁄2
2 3⁄4
3 1⁄4
3 3⁄4
AN & MS Flared/Flareless Tube Hydraulic Fittings
Example of Part Numbers
REDUCER
REDUCER
Dash No.
Dash No.
MS21916D8-4
AN919- 8D
LARGE END
TUBE OUTER Ø
Æ
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
‛S’ → CRES, Type 347
‛T’ → Titanium Alloy, 6AL-4V
Material Code
‛no letter’ → Carbon Steel
‛D’ → Aluminium Alloy, 2024
‛W’ → Aluminium Alloy, 7075
‛J’ → CRES, Type 304
‛K’ → CRES, Type 316
Dash No.
MS21916-8-4R
SMALL END
TUBE OUTER Ø
3
⁄16 Æ 1⁄8
1
⁄4 Æ 1⁄8
1
⁄4 Æ 3⁄16
5
⁄16 Æ 1⁄4
3
⁄8 Æ 1⁄8
3
⁄8 Æ 3⁄16
3
⁄8 Æ 1⁄4
3
⁄8 Æ 5⁄16
1
⁄2 Æ 1⁄8
1
⁄2 Æ 3⁄16
1
⁄2 Æ 1⁄4
1
⁄2 Æ 5⁄16
1
⁄2 Æ 3⁄8
5
⁄8 Æ 1⁄4
5
⁄8 Æ 3⁄8
5
⁄8 Æ 1⁄2
3
⁄4 Æ 1⁄4
3
⁄4 Æ 5⁄16
3
⁄4 Æ 3⁄8
3
⁄4 Æ 1⁄2
3
⁄4 Æ 5⁄8
1 Æ 1⁄4
1 Æ 5⁄8
1 Æ 3⁄4
1 1⁄4 Æ 1⁄4
1 1⁄4 Æ 3⁄4
1 1⁄4 Æ 1
1 1⁄2 Æ 1
1 1⁄2 Æ 1 1⁄4
1 Æ 1⁄2
Material Code
‛R’ → CRES, Type 321
‛T’ → Titanium Alloy, 6AL-4V
DASH NO.
DASH NO.
HEX
WRENCH SIZE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
3-2
4-2
4-3
5-4
6-2
6-3
6-4
6-5
8-2
8-3
8-4
8-5
8-6
10-4
10-6
10-8
12-4
12-5
12-6
12-8
12-10
16-4
16-10
16-12
20-4
20-12
20-16
24-16
24-20
-
⁄8
⁄16
11
⁄16
3
⁄4
13
⁄16
13
⁄16
13
⁄16
13
⁄16
1
1
1
1
1
1 1⁄8
1 1⁄8
1 1⁄8
1 3⁄8
1 3⁄8
1 3⁄8
1 3⁄8
1 3⁄8
1 5⁄8
1 5⁄8
1 5⁄8
1 7⁄8
1 7⁄8
1 7⁄8
2 1⁄8
2 1⁄8
-
Page 4 of 5
5
11
AN & MS Flared/Flareless Tube Hydraulic Fittings
Example of Part Numbers
Reference Documents
AIR FORCE-NAVY AERONAUTICAL STANDARD AN806 - PLUG, FLARED TUBE Rev 7, 17-Aug-1983
MILITARY STANDARD AN929 - CAP ASSEMBLY, PRESSURE SEAL FLARED TUBE FITTING Rev 11, 23Mar-1983
MILITARY STANDARD MS21913 - PLUG, FLARELESS TUBE Rev E, dated 26-Jun-1981
MILITARY STANDARD MS21914 - CAP, PRESSURE SEAL, FLARELESS TUBE FITTING Rev M, dated 6Mar-1990
AIR FORCE-NAVY AERONAUTICAL STANDARD AN815 - UNION, FLARED TUBE Rev 9, dated 4-Aug-1983
MILITARY STANDARD MS21900 - ADAPTER, FLARELESS TUBE TO A FLARED TUBE Rev E, 24-Oct-1988
MILITARY STANDARD MS21902 - UNION, FLARELESS TUBE Rev F, 21-Jul-1989
AIR FORCE-NAVY AERONAUTICAL STANDARD AN919 - REDUCER, EXTERNAL THREAD FLARED TUBE
Rev 9, 4-Aug-1983
MILITARY STANDARD MS21916 - REDUCER, EXTERNAL THREAD, FLARELESS TUBE Rev G, 6-Jun-1988
PROCUREMENT SPEC MIL-F-18280F - FITTINGS, FLARELESS TUBE, FLUID CONNECTION, 31-Jul-1995
PROCUREMENT SPEC MIL-F-5509D FITTINGS, FLARED TUBE, FLUID CONNECTION, 16-June-1978
Page 5 of 5