The PT06E-22-21S(SR) from Amphenol Industrial Operations is cable mount circular connector (MIL-DTL-26482 Series I), plug with female sockets, 21 position, shell size-insert 22-21 and solder cup termination. This is connector with bayonet lock fastening, environmental (no clamp) endbell and F-style strain relief. The PT06E-22-21S(SR) 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.