The 31-315-RFX is a BNC straight Crimp Plug with gold-plated brass contacts, nickel-plated brass body and a Delrin insulator. The BNC is a bayonet style connector allowing for quick connect and disconnect with a positive locking mechanism. Mating is achieved with just a quarter turn of the coupling nut. Designed to accommodate a large variety of RG and industry standard cables. This 50R miniature BNC connector is designed for M17/93-RG178, RG-178, RG-178A, RG-178B, RG-196 and RG-196A cable.