Amphenol 50 Ohm and 75 Ohm Bulkhead Mount BNC RF Coaxial Crimp Jacks 50 ohm and 75 ohm bulkhead mount BNC RF coaxial crimp jacks with a nickel plated brass body, hex crimp coaxial cable termination and a gold plated centre contact. These 50 ohm and 75 ohm bulkhead mount BNC RF coaxial crimp jack receptacles are suitable for use with a variety of RF coaxial cable types. Please refer to data table for details.