Detailed Product Description Standard according to ASME B18. 18. 2M - 93,DIN975,DIN976A,DIN976BSize from M3 to M52,10 to 2-1/2"Length from 10mm to 6,000mm,12" to 144"Material:low carbon steel,middle carbon steelGrade:(DIN)Class4.8,Class8.8,(IFI)Gr2,Gr5Surface:Plain,Zinc Plated(Cr6/Cr3),Zinc Yellow,Black,HDGPackage:bundles then palletized,cardboard tube then palletized