Self Drilling Screw with Square Recessed and Pan Head Cixi Huicheng Metal Products Co., Ltd. Base Info Material:Carbon SteelType:Countersunk HeadHead Style:Counter Sunk BoltConnection:Common BoltGroove:Special ShapeGrade:4.8 Description Pre:Conduit Fitting of EMT Stainless Steel Connectors Next:Pipe Fittings-Steel Blind Flange (DN10-DN2000)