... -8 Stainless Steel Set Screw, Metric, None Head, Internal Hex DriveA: Features Material:stainless steel,carbon steel Surface:nickel-plated,white zinc plated,blue zinc plated,color zinc plated Packing :carton ... ,C1010,C1018,C1022,C1035K,C10458, Alloy steel: SCM435,C10B21,C10B33Specification& gaugeM3-M6Surface FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish ...