1704-1QD is a straight, front mounted, female, SHV bulkhead receptcle with non-constant nominal impedance and voltage rating is 3500Vrms / 5000VDC. Insulator is made of teflon; lockwasher is phospor bronze, all other metal parts are brass. Center contact is Gold plated, and all other metal parts Nickel plated. This product has quick connect & disconnect bayonet coupling design. Outer contact ground connection is maintained through the center contact mating cycle. Recessed center contacts prevent shock hazards while unmated.