Multi-Contact Fully Insulated 50 Ohm BNC RF Coaxial Cable Plug Connector Fully insulated touch-protected 50 Ohm BNC RF coaxial cable plug connector with black polyamide (PA) insulation, nickel plated shield and gold plated brass contacts. This fully insulated 50 Ohm RF coax BNC male cable plug connector is suitable for use with RG58 coaxial cable. For suitable tooling see stock number 848-391 for crimp tool and stock number 848-436 for die set.