Hex bolts with black zinc plated 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, SS410 ... SCM435,10B21Specification& gaugeM0.8-M10Surface 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. ) ... yr Hex bolts with black zinc plated