Author Question: Which is the correct depth bore size in inches for an internal general purpose 2-1/2 - 3 Acme ... (Read 73 times)

KWilfred · **on:** Jul 26, 2018

Which is the correct depth bore size in inches for an internal general purpose 2-1/2 - 3 Acme thread?

A) 2.3333 in. B) 2.470 in. C) 2.1667 in. D) 1.9876 in.

Question 2

Before cutting coarse threads, the operator should lubricate:

A) The lead screw and gear box B) The carriage and half-nuts
C) The ways and cross slide D) All of the above