The main or principal part of a connector, plug, electrical which includes insert(s) designed to accommodate but does not include removable contacts. it may have a hood or shell, a jackscrew and jacksocket, or other means for polarizing and aligning. it is not designed to be mounted on a bulkhead, chassis, panel, wall, or the like. excludes connector body, modular plug, electrical. for items without insert(s), see shell, electrical connector.