The 97-3101A-18-4S from Amphenol Industrial Operations is cable mount circular connector, receptacle with female sockets, 4 position, shell size-insert 18-4 and solder cup termination. This connector has threaded fastening and solid backshell. The 97-3101A-18-4S has copper alloy contacts with silver finish, diallyl phthalate (DAP) insert and aluminum alloy shell with olive drab chromate over cadmium finish. Operating temperature range is from -55°C to 125°C.