TruConnect 75 Ohm BNC Bulkhead Socket

TruConnect BNC Bulkhead and Panel Sockets - TruConnect 16-0112, A straight 75Ω BNC socket with a nickel-plated zinc body and a phosphor-bronze centre contact. The socket has 2 flats in the thread to prevent rotation during installation. TruConnect 75 Ohm BNC Bulkhead Socket

Price: 2.51 from Rapid Online Rapid Electronics Ltd.