5/16-18 HEX NUT H.D.G.
5/16-18 FINISHED HEX NUT SA563 GR-A ZINC
5/16-18 HEX NUT GR 2 BLACK OXIDE
5/16-18 HEX NUT GR 2 PLAIN
5/16-18 HEX NUT GR 2 Z&Y
5/16-18 HEX NUT GR 2 ZINC (Cr3)
5/16-18 FINISHED HEX NUT GR 2 ZINC CERTIFICATE OF COMPLIANCE
5/16-18 HEX NUT 316 S/S
5/16-18 HEX NUT GR 5 PLAIN
5/16-18 HEX NUT GR 5 ZINC (Cr3)