1Description:Hex Socket Head Cap Bolt 2Standard:DIN ASTM IFI ANSI JIS AS 3Material:carbon ... steel,alloy steel 4ISO9001 Descriptionhex socket head cap boltMaterialCarbon steel, alloy steelSpecificationDIN912,DIN6912,ISO4762, ASME/ANSI B 18 ... one-time in 2009.WORKSHOPISO9001-2008 DIN912 Hex head socket cap screw