1.Description:hex cap screw bolt 2.M3-M56 3.DIN931/933 ISO4014/4017 DIN960/961 ANSI B18.2.1 4.ISO9001 certificated DescriptionHex cap screw boltFinishblack,Cr3+ white zp, Cr6+ white zp, Cr3+ yellow zp,Cr6+ Yellow Zp,HDG, HDG-ISOFFITING, Dacromet,Geomet,TelfonGrade3.6,4.6,4.8,5.6,5.8,6.8,8.8,9.8,10.9,12.9StandardDIN931 DIN933 DIN960 DIN961 ISO4014 ISO4017 ANSI B18.2.1 Mechanical propertiesconform ...