Hex Nuts Durable High tensile strength Resistant to rust and corrosion Size Range Grade Standard Diameter(Inch) Diameter(mm) 5/16″ TO 3-1/2″ 5MM TO 80MM 4, 5, 7, 8, 8S, 10, 10S, 12, 2H, 2HM DIN, IS, ISO, ASTM, ANSI, BS Finish / Coating NATURAL, BLACK, ZINC, HOT DIP, CADMIUM, NICKLE Get Quote