End of Book Questions Chapter 6
Aircraft Hardware
6-1.
What position of a rivet identification code identifies the length of the rivet?
A.
B.
C.
D.
6-2.
A 5056 rivet is used to join magnesium alloy materials because of which of the following
factors?
A.
B.
C.
D.
6-3.
Never use them on thick sheets
Never use them on aluminum alloys
Never use them with an aluminum collar
Never use them where the grip length is less than the shank diameter
What type of rivet is used for fastening thick-gauge sheets of metal together?
A.
B.
C.
D.
6-6.
Size
Color
Material
Head shape
Which of the following precautions should you take when using a ® (pin) rivet?
A.
B.
C.
D.
6-5.
Tensile strength
Cold working
Heat resistance
Corrosion resistance
Which of the following characteristics is NEVER a factor in the classification of solid rivets?
A.
B.
C.
D.
6-4.
First
Second
Third
Fourth
Solid
Blind
Shear
Structural
When space on one side is too restricted to properly use a bucking bar, what type of rivet
should you use?
A.
B.
C.
D.
Flat
Solid
Blind
Hi-Shear®
6-7.
What type of fastener is used in an application for which a high strength, interference-free
fastener is required?
A.
B.
C.
D.
6-8.
What type of fastener has high strength and is used in applications for which access to only
one side of the material is available?
A.
B.
C.
D.
6-9.
Jo-Bolt®
Lock-bolt
Hi-Lok®
Rivnut
Jo-Bolt®
Lock-bolt
Hi-Lok®
Rivnut
Which of the following characteristics describes a rivnut?
A.
B.
C.
D.
Solid
Square
Oblong
Hollow
6-10. What type of rivnut must be used on sealed floatation or pressurized compartments?
A.
B.
C.
D.
Open-end
Closed-end
Groove shanked
Externally threaded
6-11. Which of the following fasteners has a shear and tensile strength equal to or greater than the
requirements of AN or NAS bolts?
A.
B.
C.
D.
Lock-bolt
Turnlock
Rivnut
Airloc
6-12. What metal is used in the construction of the threaded pins of Hi-Lok® fasteners?
A.
B.
C.
D.
Titanium
Stainless
Anodized 2024-T6 aluminum
Cadmium-plated alloy steel
6-13. Which of the following is NEVER a head style of a Jo-Bolt®?
A.
B.
C.
D.
100-degree flush
Diamond recessed
Hexagon protruding
100-degree flush millable
6-14. What type of fastener is used on panels that are removed and reinstalled frequently for
maintenance repairs?
A.
B.
C.
D.
Hi-Lok®
Jo-Bolt®
Turnlock
Structural
6-15. What distance must the stud of a Camloc fastener be turned to release it without permitting reengagement?
A.
B.
C.
D.
One-half turn clockwise
One-fourth turn clockwise
One-half turn counterclockwise
One-fourth turn counterclockwise
6-16. Which of the following parts is used only on heavy-duty Dzus fasteners?
A.
B.
C.
D.
Pin
Stud
Spring
Grommet
6-17. When you install a hose between two duct sections, what is the maximum allowable gap, in
inches, between the duct ends?
A.
B.
C.
D.
1/4
3/8
3/4
7/8
6-18. A V-band coupling requires what minimum number of turns of safety wire?
A.
B.
C.
D.
One
Two
Three
Four
6-19. A flat-head pin used in a tie-rod terminal should be secured with what device?
A.
B.
C.
D.
Cotter pin
Sheet spring nut
Self-locking nut
Safety wire
6-20. Aircraft nuts are divided into what two general groups?
A.
B.
C.
D.
Self-locking and nonself-locking
Metal insert and fiber insert
High temperature and common
Ferrous and nonferrous
6-21. Which of the following nuts is an example of an all-metal self-locking nut?
A.
B.
C.
D.
Wing
Flexloc
Elastic stop
Internal wrenching
6-22. Which of the following types of nuts is designed to be used with cotter pins or safety wire?
A.
B.
C.
D.
Check
Plate
Castle
Barrel
6-23. When an assembly is frequently removed, which of the following types of nuts should be used?
A.
B.
C.
D.
Wing
Shear
Klincher
Sheet spring
6-24. What three types of screws are most commonly used in aircraft construction?
A.
B.
C.
D.
Machine, structural, and self-tapping
Brazier-head, round-head, and common
Self-tapping, Phillips, and common
Structural, machine, and pan-head
6-25. Which of the following types of screws are as strong as bolts of the same size?
A.
B.
C.
D.
Setscrews
Machine screws
Structural screws
Self-tapping screws
6-26. Flush-head screws are available in what degree(s) of head angles?
A.
B.
C.
D.
82° only
82° and 100° only
82°, 100°, and 125° only
82°, 100°, 125°, and 145°
6-27. When replacing an original screw in a structure, you should never use which of the following
screws?
A.
B.
C.
D.
Setscrew
Machine screw
Structural screw
Self-tapping screw
6-28. Aircraft cables have the center core twisted in one direction and the outer core in the opposite
direction for what reason?
A.
B.
C.
D.
To make the cable rigid
To make the cable stiffer
To minimize the stretch or set
To allow the strands to expand when cut
6-29. A piece of 7 x 19 cable has what total number of wires?
A.
B.
C.
D.
133
26
19
7
6-30. Terminal fittings are generally attached to the ends of cables by what method?
A.
B.
C.
D.
Swaging
Welding
Splicing
Soldering
6-31. The size of a cable is determined by which of the following factors?
A.
B.
C.
D.
Lay
Tension
Diameter
Strength
6-32. The turnbuckle is used to make what type of cable adjustments?
A.
B.
C.
D.
Minor adjustments to cable length only
Minor adjustments to cable tension only
Minor adjustments to cable length and tension
Adjustments to cable threads
6-33. Adjustable connector links are used in what type of cable assemblies?
A.
B.
C.
D.
Very long
Very short
Thin
Stretch
6-34. How many different types of cable guides are used throughout an aircraft?
A.
B.
C.
D.
Two
Three
Four
Five
6-35. A fairlead may be used to minimize cable whipping and what other action?
A.
B.
C.
D.
Sticking
Binding
Slacking
Vibration in long cable runs
6-36. A grommet is manufactured from what material?
A.
B.
C.
D.
Rubber
Aluminum
Copper
Felt
6-37. What device is used on cables or rods that must move through a pressurized bulkhead?
A.
B.
C.
D.
O-ring
Grommet
Pressure seal
Back-up ring
6-38. What device changes cable direction and allows a cable to move with minimum friction?
A.
B.
C.
D.
Pulley
Sector
Quadrant
Bell crank
6-39. A connector assembly consists of how many different parts?
A.
B.
C.
D.
One
Two
Three
Four
6-40. What device provides a means of fastening a wire to a terminal stud?
A.
B.
C.
D.
Connector
Bonding wire
Terminal
Static discharger
6-41. What type of terminal is generally recommended for use on naval aircraft?
A.
B.
C.
D.
Crimped
Soldered
Twist-on
Fused
6-42. What type of terminal is usually used in emergencies only?
A.
B.
C.
D.
Crimped
Soldered
Twist on
Fused
6-43. What type of connection is used to connect all metal parts of an aircraft to complete an
electrical unit?
A.
B.
C.
D.
Terminal
Static
Bonding
Fused
6-44. What component allows for the continuous satisfactory operation of onboard navigation and
radio communication systems?
A.
B.
C.
D.
Bonding wires
Connectors
Terminals
Static dischargers
6-45. What factor accounts for the majority of all fastener problems?
A.
B.
C.
D.
Fatigue failure
Improper material
Cross-threading
Corrosive breakdown
6-46. Cotter pins are used to secure which of the following devices?
A.
B.
C.
D.
Bolts only
Nuts only
Screws only
Bolts, nuts, and screws
6-47. What type of safety wire is used in high-temperature areas?
A.
B.
C.
D.
Bailing
Brass
Annealed copper
Annealed, corrosion-resistant
6-48. What type of safety wire is used on valves and levers used for emergency operation of aircraft
equipment?
A.
B.
C.
D.
Copper
Brass
Bailing
Corrosion-resistant
6-49. How many different methods are used for safetying a turnbuckle?
A.
B.
C.
D.
One
Two
Three
Four
6-50. How many times, if any, can a turnbarrel lock clip be reused?
A.
B.
C.
D.
One time
Two times
Three times
It cannot be reused
6-51. How many pieces of safety wire are used when securing a turnbuckle using the wire-wrapped
method?
A.
B.
C.
D.
One
Two
Three
Four
6-52. When you use the wire-wrapped method on a turnbuckle, each wire is wrapped how many
times around the shank?
A.
B.
C.
D.
One
Two
Three
Four