CMD5464881 50Ω Cable Mount BNC Connector, Plug, Nickel, Clamp Termination. 75 Ohm BNC RF coaxial plug connectors with bayonet coupling and a cable clamp termination. These 75 Ohm BNC straight RF coax cable clamp plugs have a nickel plated body, gold plated centre contact and are for use with a variety of RF coaxial cable types.