# What do rivet numbers mean?

## What do rivet numbers mean?

The first number in the trade size refers to the diameter of the rivet in 32nds of an inch. The second number(s) refers to the maximum grip length in 16ths of an inch. So, a trade size 45 rivet dimensions are 4/32” (1/8”) diameter with a 5/16” maximum grip range.

How do you read a rivet code?

4 – First numbers after material code indicate diameter of rivet in 32nds of an inch. 4=4/32″ or 1/8″, 12=12/32″ or 3/8″, etc. 8 – Last numbers indicate length of rivet in 16ths of an inch: 8=8/16″ or 1/2″, 10=10/16″ or 5/8″, etc.

### What is the difference between countersunk rivet and universal head rivet?

When replacement is necessary for protruding head rivets—roundhead, flathead, or brazier head—they can be replaced by universal head rivets. The countersunk head rivet is flat topped and beveled toward the shank so that it fits into a countersunk or dimpled hole and is flush with the material’s surface.

What is an470 rivet?

These solid-shank rivets are commonly used for assembly of sheet metal aircraft and aluminum monocoque race car chassis. The 350 lb shear strength and 450 lb tensile strength makes them suitable for structural use on interior and exterior applications.

#### How much force can a rivet take?

A large two-cylinder tool with a C yoke might weigh 15 pounds and apply 12,000 pounds of force. It can upset aluminum rivets up to 0.25 inch in diameter or steel rivets up to 0.2187 inch in diameter.

Which riveted joint is having minimum efficiency?

The efficiency of a joint is defined as the ratio between the strength of a riveted joint to the strength of an un-rivetted joint or a solid plate….Detailed Solution.

Joints Efficiencies (in %)
Lap Single riveted 50 – 60
Double riveted 60 – 72
Triple-riveted 72 – 80
Butt (double strap) Single riveted 55 – 60