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M6 > M6.5 Fastners > Flashcards

M6.5 Fastners Flashcards

1
Q

What are screw threads measured with?

A

Thread pitch gague

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2
Q

What are the classes or fit for screws?

A

1 loose
2 free
3 medium
4 close
5 tight

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3
Q

What is then flank on a thread?

A

Slope between root and crest

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4
Q

What is the major diameter for male and female?

A

Male = crest to crest
Female = root to root

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5
Q

What is the minor diameter for male and female?

A

Male = root to root
Female = crest to crest

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6
Q

What is BSF?

A

British standard thread

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7
Q

What doe BSW, BSP and BSF stand for?

A

British standard whitworth, British standard pipe, British standard fine

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8
Q

What angle is the BSF?

A

55 degrees

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9
Q

What angle is the British association?

A

47.5 degrees

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10
Q

What is the American national thread angles?

A

60 degrees

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11
Q

Where are fine threads used?

A

Vibration prone areas

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12
Q

What direction can square threads go?

A

Both directions

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13
Q

What direction can buttress threads go?

A

One direction

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14
Q

What direction can acme threads go?

A

Both directions

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15
Q

What does X mean in materials identification of bolts?

A

Steel

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16
Q

What does - mean in material identification of bolts?

A

Corrosion resistant steel

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17
Q

What does - - mean in material identification of bolts?

A

Aluminium

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18
Q

What does the triangle mean in material identification of bolts?

A

Close tolerance

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19
Q

What load do Clovis bolts carry?

A

Shear

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20
Q

What load do eye bolts carry?

A

Tension

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21
Q

What does a internal wrenching bolt need under its head?

A

Washer

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22
Q

Describe low temp self locking nuts

A

. 121 degrees max
. Nylon cuts

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23
Q

Describe high temp self locking nuts

A

. 121 degrees minimum
. Friction locked

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24
Q

What are anchor nuts used for?

A

Panels removed regularly

25
Q

Where are tinnerman nuts used?

A

Are with chance of magnetic field

26
Q

What is a stud?

A

Shaft threaded at both ends

27
Q

Describe a standard stud

A

Same throughout

28
Q

Describe a waisted stud

A

Weight saved throw minimised thread

29
Q

Describe a stepped stud

A

Anchorage in soft materials, has a step up

30
Q

Describe shouldered studs

A

Lateral rigidity, different diameters

31
Q

What 3 ways are studs removed?

A

Stud box, stud insertion tool, lock nuts

32
Q

What is used to repair a thread?

A

Heli coil

33
Q

What is a heli coil?

A

. Replaces thread
. 1/2 pitch below surface

34
Q

What’s are the 3 screws?

A

. Machine
. Structural
. Self tapping

35
Q

What is a dowel?

A

Alignment tool

36
Q

What’s a spring washer

A

Friction locking

37
Q

Can a tab washer be reused?

A

No

38
Q

When can a shakeproof locker be reused?

A

If springiness is retained

39
Q

What does a heavy duty dzus faster have?

A

Grommet

40
Q

What loads does a taper pin carry

A

Shear

41
Q

What materials are split pins

A

Carbon or cress

42
Q

What should you ensure with a gib head key

A

Goes in certain depth only

43
Q

What does 426 mean?

A

Countersunk

44
Q

What does 470 mean?

A

Universal

45
Q

What is the diameter and length measured in with rivets?

A

Diameter 1/32
Length 1/16

46
Q

What is a 1100 rivet?

A

Plain head, A

47
Q

What is a 2117 rivet?

A

Dimple head, AD

48
Q

What is a 5056 rivet?

A

Cross, B

49
Q

What is a 2024 rivet?

A

Double lines, DD

50
Q

What is a 7050 rivet?

A

Circle, E

51
Q

What is a 2017 rivet?

A

Triangle, D

52
Q

What are CRES rivets used for?

A

Firewalls

53
Q

How is Monel identified in rivets?

A

Two dots

54
Q

What does special or blind rivets access?

A

One side

55
Q

What rivets do huck lock replace?

A

Solid shank rivets

56
Q

What’s the difference between cheery lock and max?

A

Cherry max only requires one tool

57
Q

What does an Olympic lock require?

A

Specific tool

58
Q

What does a hi lock have?

A

Internal thread

M6 (10 decks)

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