The use of a die against a piece of flat metal to change its shape is called ____.

A) forging
B) welding
C) stamping
D) pressing

The acronym SAE stands for ____________________________________.

The outline form or shape of a line or surface is a ____________________.

Parts used to join sections of pipe are called fitments.

UNC stands for United National Coarse.

The diameter of an imaginary circle on which the gear tooth is designed is the ____.

A) diametral pitch
B) pitch diameter
C) root diameter
D) circular pitch