A matched pair of lock washer and nut suitable for use on most BNC sockets. ID: 1/2" Thread : Unified Fine 28 TPI Hex nut : 14mm AF x 2.48mm thick material : nikel plated steel. Status: BNS (Brand New Stock) Sold in packets of 10 pairs ( 10 washers + 10 nuts) RoHS compliant: YES