hardware oral

Information indicated by markings on solid-shank rivet heads

Material, and indirectly, strength.

Method used to keep heat-treated aluminum-alloy rivets soft after quenching

Store them in a freezer.

Grip length of a bolt

The length of the unthreaded portion.

Method of identifying AN standard steel bolts

By code markings on the bolt head.

Difference between a close-tolerance bolt and a general-purpose bolt

Close-tolerance bolts are machined to more accurate dimensions.

Condition under which self-locking nuts are prohibited

When the bolt or nut is subject to rotation.

Method to determine bolt torque if no value is specified

Use a standard torque table, such as AC 43.13-1B.

Most commonly used aircraft control cable

Extra-flexible $7 \times 19$ stainless-steel cable.