Heavy Hex Nuts Durable High tensile strength Resistant to rust and corrosion Size Range Grade Standard Diameter (Inch) Diameter (mm) 5/16″ TO 4″ 8MM TO 100MM 8, 8S, 10, 10S, 12, 2H, 2HM DIN, IS, ISO, ASTM, ANSI, BS Finish / Coating NATURAL, BLACK, ZINC, HOT DIP, CADMIUM, NICKLE Get Quote