1
Q
1.What are 2 ways to potentially safety a nut and bolts?
A
Lock wire and cotter pins
2
Q
- How many methods to install a cotter pin?
A
3 methods
3
Q
- What are the 3 standard sizes for lockwire? -
A
0.0020” , 0.0041”, 0.0032”
4
Q
- What is the turns per inch standard for lockwire?
A
6-8 turns per inch
5
Q
- What is the main difference between a DOUBLE and a SINGLE PASS lockwire?
A
- The main difference is that a double pass is when the lockwire passes through the same bolt head 2 times
6
Q
- Can bolts used with castellated nuts be lockwired?
A
Yes
7
Q
- What is a triple lockwire? -
A
Lockwire around 3 bolt heads
8
Q
- Can screws be lockwired in a continuous loop?
A
Yes
9
Q
- What is a single pass? -
A
When the lockwire passes through the bolt head once
10
Q
- What does/ can a turnbuckle connect? -
A
Turnbuckles are fitted in the control cable assembly for the purpose of making minor adjustments in cable length for adjusting the cable tension
11
Q
11.What type of threads are on the inside of a turnbuckle? -
A
Right hand and left hand internal threads
12
Q
12.Why is there a groove on one side of a turnbuckle? -
A
To identify the left-hand threads
13
Q
13.How can turnbuckles be put in safety? -
A
By lock wiring it
14
Q
- Should the cables rotate when tensioning them?
A
No
15
Q
15.What tool is used to measure cable tension? -
A
Cable tension meter
16
Q
- What is the preferred turnbuckle safety single pass or double pass why?
A
Double pass
17
Q
- Can lockwire be a substitute for witness wire? -
A
No
18
Q
- What is the purpose of Mil specs?
A
Is used to help achieve standardization objectives by the U.S. Department of defence (Standardize equipment and consumables)
19
Q
- What are the 3 general aviation standards?
A
AN (Air Force-Navy/Army-Navy)
MS (Military Standard)
NAS (National Aerospace Standards)
20
Q
- What does U.N.F stand for?
A
Unified National Fine
21
Q
- What is T.P.I.?
A
Threads Per Inch
22
Q
- What does a thread gage identify?
A
Threads Per Inch
23
Q
- Which clock angle directions do you turn right hand threaded fasteners to install them?
A
Clockwise
24
Q
- How many points are on a HEX head bolt?
A
6
25
8. What is a shear load? -
Shear stress refers to cases where a deforming force is applied parallel to a surface.
26
9. What is a tensile load? -
Tensile stress refers to cases where a deforming force is applied at right angles to a surface
27
28
10.What materials can A.N. bolt be fabricated out of?
Cadmium plated nickel steel corrosion resistant steel
29
11.What does an X on an A.N. bolt head represent? -
Made from Cadmium plated nickel steel
30
12.Will the letters DD or C be in the part # of an A.N. bolt if it’s cad plated nickel steel?
No
31
13.What do the letters DD represent in the part number for A.N. bolt?
2024 Aluminum Alloy
32
14.What are the diameters of A.N. bolt measure in? -
1/16”
33
15.What are the lengths of A.N. bolt measured in? -
1/8”
34
16.What type of socket used to secure an A.N. bolt head ( 12 or 6 point)
6 point
35
19. What letter identifies if there is a hole in the threads/ shank of an A.N. bolt?
No letter
36
20. What letter identifies if there is a hole in the head of an A.N. bolt? A
The letter H
37
21. How can you tell if an A.N. bolt is made of corrosion resistant steel? -
Bolt head marking (+, x, *)
38
22. What is the # Range of A.N. bolt’s? -
A.N. 21 through A.N. 36
39
23. What is the purpose of a hole in the thread or head of a bolt? -
For safety purpose, lockwire is used to secure the bolts from
disassembly
40
24. What tool is used to secure a clevis bolt during installation? -
Castle nut and cotter pin
41
25. What type of loads are clevis bolts design to take (high shear or high tensile)?
High shear loads
42
26. What is the # range of A.N. clevis bolts? -
A.N. 21 through A.N. 36
43
27. What does it mean if the letter “A” is in the part number of a clevis bolt?
There is no hole in the shank or threads
44
28. What markings are on a close tolerance bolt head? -
A triangle with an X inside
45
29. What is the # Range of a close tolerance bolt? -
A.N. 173 through A.N 186
46
30. What are the diameters of clevis bolts measured in? -
1/16”
47
31. How many of the flats will be drilled on M.S. drilled head bolts? -
6
48
32. What type of threads are on an M.S 20073 drilled head bolt? -
Fine threads
49
33. What type of socket is used to install internal wrenching bolts?
Allen key wrench/socket or HEX head socket
50
34. What type of screw drivers are required to secure Countersunk head bolts? -
Phillips screwdriver or Allen key (hex) wrench
51
35. What type of sockets are used on External wrenching bolts for installation?
52
36. Should 12 point sockets be used on 6 point nuts and bolts?
Idk
53
Open end, box end, combination, & flare nut are all types of_______________.
Wrenches
54
38. What is another name for gear wrench? -
Ratchet Wrench
55
39. Can a 12 point socket turn a 6 point nut? -
Yes
56
40. What part of the ratchet does a socket attach to? -
Ratchet (Drive)
57
41. Are ratchets reversible? -
Yes
58
42. What can be used to attach 3/8” drive ratchet to a ¼” drive Socket?
Adapter
59
43. Do crows' foot sockets come in both 6 and 12 points?
Yes
60
44. What are the 2 categories of NUTS?
Self locking nuts and non self locking nuts
61
45. How is a jam nut used?& what is the A.N. part number for a jam nut? -
An old way of safetying a plain nut is by jamming a 2nd nut onto the 1st nut. AN316
62
46. What is used to safety a castellated nut? -
A cotter pin
63
47. What is the part number of a low profile A.N. castellated nut?
AN320
64
48. What is used under the bolts head and nut to disperse the load during installation? -
A Washer
65
49. What are AN935 and AN936 used as?
As Washers
66
50. What does the letter “L” represent in part number AN960L? -
Light/ thin
67
51. What is the part number for an A.N. plain nut?
An315
68
52. What is another name for an A.N.970 washer? -
Flat Washers
69
53. How many threads must be showing for a nut and bolt to be in safety? -
1-3 threads
70
54. Is an A.N. 525 a structural screw? -
Yes
71
55. Is an A.N. 525 screw countersunk or dome head? -
Dome head
72
56. Can structural screws be U.N.F and U.N.C?
Idk
73
57. Are machine and self- tapping screws classified as structural screws? -
No
74
58. What is another name for self- tapping screws? -
Metal screws, sheet metal screws, tapping screws, or tapper screws
75
Are screw diameters lettered, numbered, or fractional?
76
60. What is a larger screwdriver a # 2 or #3? -
#3 screwdriver
77
61. What will happen if the wrong sized screwdriver is chosen to do the job?
You could strip the screw head
78
62. (True or false) Dzus fasteners & Cam locks are ¼ turn inserts. -
True
79
63. (True or false) Tinnerman nuts and anchor nuts are threaded inserts?
True
80
What Does U.N.C stand for -
Unified National Coarse
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