Specialty Fasteners

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Physics

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31 Terms

1
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Is the pop rivet approved for aircraft use?

no

2
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why is the pop rivet an issue for aircraft use?

Hollow shaft leads to low/inconsistent strength. Mandrel stem may or may not fall out

3
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what is the aviation grade version of a pop rivet?

cherry max rivet

4
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where can you use a cherry max rivet on an aircraft?

for applications where structural strength was not required.

5
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is a cherry max rivet approved for structural use?

no.

6
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are pop rivets grip specific?

yes

7
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Which of these is not a valid method of installing countersunk rivets?

Countersink the upper and lower sheets, and drive the rivet.

8
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When fastening a thin sheet to the top of a thick sheet, which of these should be used?

Dimple the upper sheet, and countersink the lower sheet. Then drive the rivet.

9
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When fastening two thin sheets together, which of these should be used?

Dimple the upper and lower sheets, and drive the rivet.

10
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When fastening a thick sheet over the top of a thin sheet, which of these techniques should be used?

Countersink the upper sheet, and drive the rivet.

11
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When fastening two thick sheets together, which of these techniques should be used?

Countersink the upper sheet, and drive the rivet.

12
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when replacing cherry max rivets can you replace it with the same size rivet?

yes, In most applications, they are approved to replace size for size.

13
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cherry max rivets are also available in

half sized increments

14
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Hi-Shear Fasteners

two-piece fastener system that uses heat treated steel pins to develop strength.

15
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hi-shear fasteners are similar to rivets where

You need access to both sides

16
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Hi-Lok, Hi-Tigue, and Hi-Lite are all

similar

17
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lock bolts are used where

higher strength is needed

18
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riv nuts are used for

non-structural thread attachment

19
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issues with riv nuts are

not very strong, spin

20
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Quarter Turn Fasteners are

Used to secure items that must be frequently removed and replaced (or opened and closed).

21
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the grip length of a dzus fastener is

given in 100ths of an inch.

22
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Tinnerman Nuts

Used to secure sheet metal screw threads in sheet aluminum

23
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can a tinnerman nut be replaced if there’s wear?

yes

24
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which type of screw should you never use with aircraft speed nuts?

pointy type A screws

25
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anchor nuts (nutplates) are commonly installed with

AN426AD-3 rivets.

26
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Which item does not belong in this group?

A silver cleco

27
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What is closest to the ideal diameter of a #3 rivet shop head?

0.140

28
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How do you remove a solid rivet?

Drill the head only. Snap the head off. Punch out the shank

29
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How far should the shank of a rivet stick out past the material before you buck it?

1.5 times the diameter of the rivet

30
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Which of these tools should not be used for the installation of a Cherrymax rivet?

a bucking bar

31
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You didn’t practice drilling out 470 rivets enough, and you footballed a hole. What is the correct way to fix it?

Use a rivet one size larger than the rivet you are replacing in its place