Screws Flashcards
1
Q
Name the three types of screws and their differences.
A
Structural, has a grip length.
Machine, has no grip length.
Self tapping, course thread.
2
Q
What are the two types of point on a self tapper?
A
Type A, gimlet or point
Type B, flat point.
3
Q
What are structural screws made form?
A
Heat treated alloy steel, can be sued as structural bolts.
4
Q
Name four head types on self tapping screws.
A
Round head.
Truss head.
Counter sunk, flat head.
Counter sunk, oval head.
