... Quality Raw Material 3)Strict Testing Process and Management SpecificationsHex Nuts DIN934 1.Class 6 /Class 8 2.All Kinds of ... MnTiB 40Cr 42CrMoStainless Steel:304 316 304L 316LStandard Details: DIN STANDARD:934,555,439,936,970,985,980,562,557,582,6923 ... :AS1112,BS1083,BS1768,IFI D-5,D-8,UNI5587,SQUARE NUTS,TEE NUTS