ISO/TS 10303-1815 specifies the application module for mating structure.

The following are within the scope of ISO/TS 10303-1815:

• identification of a mating relationship between two components in an assembly;
• items within the scope of application module Assembly technology, ISO/TS 10303-1649;
• items within the scope of application module Item definition structure, ISO/TS 10303-1345.