scope:

The scope of this standard includes a wide range of commercial assemblies such as a housing for a machine, a metal cabinet, a jack, a gearbox, a boom for a crane, a radar reflector, etc. Practices peculiar to the drafting of specialized mechanical assemblies such as those associated with aircraft, auto mobile bodies, ship frames or certain electrical assemblies are not considered to be within the scope of this standard. Engineering design requiring the estimation of strength and performance of assemblies is not considered to be: within the scope of this standard.

Purpose. The purpose of this standard is to show preferred drafting practices for depicting mechanical assemblies intended for domestic or industrial use. They are composed of an aggregation of parts and subassemblies which are joined together by various fastening means to form a completed unit.