STEEL HEX NUT 1.Surface:plain,zinc plated,hot dip,brass 2.Size:M3-M56 3.Material:Carbon Steel,SS,Brass 4.Grade:4.6,8,10 STEEL HEX NUT1) Different kinds of nuts available ,M3 to M30 to be mae by cold forming, M33 and up to be made by hot-forging.2) Different finish, such as black, zinc plated, yellow zinc plated3) Can be made as low carbon steel and high tensile4) Mainly used for indoor and ...