5/16-18 HEAVY HEX NUT H.D.G.
5/16-18 HEAVY HEX NUT PLAIN
5/16-18 HEAVY HEX NUT ZINC
5/16-18 HEAVY HEX NUT 316 S/S
5/16-18 HEAVY HEX NUT BRASS
5/16-18 HEAVY HEX NUT SILICON BRONZE
5/16-18 HEAVY HEX NUT S/S
5/16-18 HEAVY HEX NUT A194 G-8M SUP.1 S/S