The PT02A-22-21P from Amphenol Industrial Operations is box mount circular connector (MIL-DTL-26482 Series I), receptacle with male pins, 21 position, shell size-insert 22-21 and solder cup termination. This is connector with bayonet lock fastening and general-duty (threaded) endbell. The PT02A-22-21P has copper alloy contacts with gold finish, neoprene insert and aluminum shell with olive drab cadmium finish. Operating temperature range is from -55°C to 125°C.