Answer is:
It is unable to prevent relative motion between two rotating parts
Answer is:
grub screw
Explanation:
A small headless screw having a slot cut for a screw driver is called grub screw
Answer is:
Circular
Explanation:
The head of a thumb screw is circular in shape.
Answer is:
Woodruff key
Explanation:
A key that fits into a semicircular keyway cut in the shaft is woodruff key
Answer is:
60 Degree
Explanation:
The angle of I.S. thread (V-shaped) is 60 Degree
