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Flashcards in Aircraft Hardware Deck (138)
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31

Differnce between Class 1 and Class 5 fit of threads

Class 1 can be tightneded by hand,

Class 5 requires tools from start to finish

32

Threaded fasteners diameters are given in

1/16 inch

33

Threaded fasteners lengths are given in

1/8 inch

34

If the length of a bolt is greater than one inch, the code identification is given 

with two numbers for length, the first being the whole number in inches

the second being the fraction assumed in 1/8

35

Identify

1. Head

2. Grip

3. Point

4. Grip length

5. Thread length

6. Length

36

Unless otherwise specified, an aircraft bolt is made of

cadmium-plated nickel steel

37

The letter "C" in between the bolt diameter and length indicate

Corrosion resistant steel

38

The letters "DD" in between the bolt diameter and length indicate

Aluminium alloy

39

Identify the types of hardware:

AN4-6

AN4C6

AN4DD6

1. Cadmium plated nickel steel 4/16 dia, 6/8 lgt

2. CRES 4/16 dia, 6/8 lgt

3. Aluminium 4/16 dia, 6/8 lgt

40

The FAA forbids the use of aluminium alloy and steel alloy bolts smaller than_____ on structural components

AN3

41

When the letter "A" appears after the bolt dash number

This letter indicates that the bolt does not have a hole in the shank

42

When the letter "A"  DOES NOT appear after the bolt dash number

The absence of this letter indcates that the bolt has a hole in the shank 

43

A bolt such as those used for fastening propellers into flanged shafts have "_" after the dash number on the bolt code and this signifies that

"H"

The bolt has a drilled head for safetying

44

The tolerance that Close Tolernce bolts have

+0.000", -0.0005"

45

What must be doen to a close tolerance bolt prior to installation

Shank is Lubricated with grease to provide some degree of corrsion protection since the tolerence is so tight

46

The type of bolt ONLY used for shear loads

Clevis bolts

47

Typical application of Clevis bolts

Control cable installations

48

What the grip length of a bolt must be equal to

The material thickness

49

The common practice for when the grip length of a bolt is greater than the material's thickness

Addition of washers

50

The direction that a bolt should not be installed in unless otherwise specfied 

upside down

51

Never assume that a control cable is clear of a bolt until

The bellcrank has been inspected for full travel

52

Identify

1. Control surface

2. Bellcrank

3. Cable

53

Identify

Close Tolerance Bolt

54

Identify

Clevis Bolt

55

Identify

Wing nut

56

Identify

Slotted Engine Nut

57

Identify thread type

1. Type A

2. Type B

58

Identify

Filister Screw

59

Identify

Round head

60

Indentify

Truss Screw