Specialty Fasteners

Is the pop rivet approved for aircraft use?

Is the pop rivet approved for aircraft use?

no

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

what is the aviation grade version of a pop rivet?

cherry max rivet

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

for applications where structural strength was not required.

is a cherry max rivet approved for structural use?

no.

are pop rivets grip specific?

yes

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

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

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.

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

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

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.

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

Countersink the upper sheet, and drive the rivet.

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.

cherry max rivets are also available in

half sized increments

Hi-Shear Fasteners

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

hi-shear fasteners are similar to rivets where

You need access to both sides

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

similar

lock bolts are used where

higher strength is needed

riv nuts are used for

non-structural thread attachment

issues with riv nuts are

not very strong, spin

Quarter Turn Fasteners are

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

the grip length of a dzus fastener is

given in 100ths of an inch.

Tinnerman Nuts

Used to secure sheet metal screw threads in sheet aluminum

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

yes

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

pointy type A screws

anchor nuts (nutplates) are commonly installed with

AN426AD-3 rivets.

Which item does not belong in this group?

A silver cleco

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

0.140

How do you remove a solid rivet?

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

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

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

a bucking bar

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