... washers with black zinc plated 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS4202,Steel:C45(K1045), C46(K1046),C203.Brass ... ,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G ...