The CIR01AF-28-21PZ-F80-T12 from ITT CANNON is circular connector, in-line receptacle (round flange with flats) with male pins, 37 position, shell size-insert 28-21, bayonet lock, backshell (with A style clamp and bushing), orientation Z and crimp contacts. This connector has copper alloy contacts with gold finish, chloroprene rubber insulator and aluminum alloy shell with chromate over cadmium, olive drab plating. Operating temperature range is from -55°C to 125°C.