Used with the Quarter-Turn Fastener series QCTH, QCTHA, QCTHL, QCTHH. The thin plate style allows back side mounting with the provided hex nut and includes a locating pin to prevent the receptacle from turning. Made from 4140 alloy steel with an electroless nickel plate finish. The nut is made from stainless steel. Plate Thickness 6-10 mm.