Hex socket set screws with black zinc plated 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, ... 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. ) etc.Heat TreatmentTempering,Hardening, ...