Hex Head Self Drilling Screw, Zp Shijiazhuang Zhuolang Technology Co., Ltd Base Info Model NO.:ZLWA12Material:Carbon SteelType:Hexagon HeadGroove:HexagonConnection:DrillingHead Style:HexagonalStandard:DIN, GB, ANSI, JISGrade:4.8Specification:Various sizes availableOrigin:China Description Pre:A2-70 Hexagon Cap Screw Next:Stainless Steel Automobile Screws