What are the five types of stresses?
Tension, compression, Torsion, Shear, and bend
Bending is a combination of what two types of stresses?
Tension and compression
A combination square is made up of what three types of heads?
Stock head, protractor head, center head
what drill bit should you use to drill a hole in a larger than 3/16 in sheet metal?
No.40 or no.30 drill bit
What is the most frequently used repair rivet?
AD
Name two ice box rivets?
D & DD
What is the alloy and head marking of an AD rivet?
2117 ; dimple head
What is the alloy and head marking of a B rivet?
5056 ; raised cross
What is the alloy and head marking of an A rivet?
1100 ; has no head marking
What is the alloy and head marking of a D rivet?
2017 ; raised dot head marking
what is the alloy and head marking of a DD rivet?
2024 ; two dashes head marking
What is the formula for minimum edge distance?
2 x diameter
What precautions should you take when using a rivet gun?
- never point a rivet gun at someone
-only use tool for intended purpose
-never depress the trigger mechanism unless the set is held tightly against a block of wood or rivet
-always disconnect the air hose when not in use for a appreciable length of time
When you drill at what angle should you hold the drill?
at a 90 degree angle to the work or the curvature of the material
how do you remove burrs?
with a metal countersink or a file
What are the two methods of countersinking commonly used for flushed riveting in aircraft construction and repair?
-machine or drill countersinking
-dimpling or press countersinking
