This document specifies the integrated resource constructs for Mechanical features.

The following are within the scope of this document:

• constraints on life cycle context invariant identifiers for topological items;
• counterbore, countersink, counterdrill, and spotface description and application;
• features that are to be manufactured by either milling or turning processes;
• features that can be replicated in patterns;
• generic mechanical design concepts;
• implicit representation of machining features through selection of standard parameters;
• machining feature definition elements necessary for creating machining features;
• machining features for defining shapes necessary for manufacturing;
• product and manufacturing information placeholder in a three dimensional geometric model;
• shape representations necessary for creating machining features.