Hex socket set screws with black zinc plated 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS4202, ... ,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.Heat ... and help solve problem after sales. 2,Factory overview 3, Warehouse and Workshop show 4,Manufacture Process 5,Quality Control 6, Strong ...