4.8 grade galvanized hex nuts

Commonly used 4-grade nuts and 8-grade nuts, basically need galvanized treatment, one is for good looks, non-galvanized nut bolts, the surface is natural, looks matte, and galvanized nut bolts, the surface is bright, but also can be plated according to the requirements of white zinc, blue and white zinc, color zinc, etc. The galvanized treatment of bolt nuts can prevent rust and prolong the service life.