... goods: Finished Hex Full Nuts — Zinc, FineMaterial:stainless steel,carbon steel,ironSurface:nickle plated,white zinc,black oxideSize ... SCM435,C10B21,C10B33Specification& gaugeM2-M22Surface FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting ... ,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) ...