TruConnect 50 Ohm Nickel Plate BNC Bulkhead Socket

TruConnect BNC Bulkhead and Panel Sockets - TruConnect 16-0111, A straight 50Ω 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 50 Ohm Nickel Plate BNC Bulkhead Socket

Price: 2.12 from Rapid Online Rapid Electronics Ltd.