rivet theory

What is Rivet Theory?

A theory stating that there is zero margin of error allowed; it has to be perfect.

What is a solid shank rivet?

A metal pin used to hold two or more metal sheets or parts together.

What is the MS code for a universal head rivet?

MS 20470

What is the MS code for a countersunk head rivet?

MS 20426

What is the MS code for a round rivet?

MS 20430

What is the MS code for a brazier rivet?

MS 20452

What is the MS code for a flat rivet?

MS 20442

What happens to most fasteners like bolts and screws?

They actually shrink in diameter.

What drill size corresponds to a nominal rivet diameter of 3/32?

40

What drill size corresponds to a nominal rivet diameter of 1/8?

30

What is the rivet code breakdown's first part?

The standard, fabricated to MS20 (military standard).

What is the significance of the head style in rivet codes?

It indicates the type of head, e.g., 426 for countersunk head.

What does the alloy designation 'AD' indicate?

It indicates the rivet is made from 2117T alloy.

What is the grip length in rivet length calculation?

The combined thickness of the materials to be joined.

How is the extra length of shank needed for forming the shop head calculated?

It is 1.5 times the diameter of the rivet.

What is the edge distance for a universal rivet?

2D-4D

What is rivet pitch?

The distance between two rivets in the same row, measured from center to center.

What is the minimum rivet pitch?

3D (3 rivet diameters).

What is the maximum rivet pitch?

10D-12D (10-12 rivet diameters).

What are the two basic methods of making a nest or well for rivets?

Cut-countersinking and dimpling.

What is the purpose of dimpling?

To form a depression for the rivet head when the material is too thin for countersinking.

What type of rivet is the '1100' / 'A' rivet?

An aluminum rivet that is not structural.

What is a '2117' / 'AD' rivet known for?

It is the most popular alloy rivet due to its strength and does not require heat treatment.

What is the characteristic of '2017' or 'D' rivets?

They require heat treatment and are known as 'icebox rivets.'

What is the significance of '2024' or 'DD' rivets?

They are stronger than 'D' rivets but must be used shortly after removal from the freezer.

What does the 'E' rivet indicate?

It does not require heat treatment or freezing and cannot be cut to size.

Rivet pitch size

It’s from 3D To 12D (D stands for diameter)

what are the Advantages of coin dimpling

It ensures a stronger safer joint

Advantages of a radius dimpling

The size of the equipment is smaller so it can get into places that it’s larger counter part can’t

Gauge or transverse pitch

Is 75% of the rivet pitch