A screw thread is formed on a cylindrical surface by cutting

47) A drilled hole after tapping is called

Answer is:

Explanation:

A drilled hole after tapping is called as tapped hole.

Answer is:

Explanation:

The root of ISO metric thread is round

Answer is:

Explanation:

B.S.F screw threads are generally used for Electrical goods.

Answer is:

Explanation:

Screw threads are produced without metal removing by a process called as Thread rolling