Multi-Contact Fully Insulated 50 Ohm BNC RF Coaxial Panel Mount Socket Connector Fully insulated touch-protected 50 Ohm BNC RF coaxial panel mount socket connector with black polyamide (PA) insulation. This fully insulated 50 Ohm RF coax BNC bulkhead / panel mount socket connector has a nickel plated shield, solder termination and gold plated brass contacts and can be screw mounted into pre-drilled panels (thread size WHITWORTH PIPE THREAD Rp 1/8")