... , DIN7982, DIN7983 ASME B18.6.4 & SAE J933 specifications Self Tapping ScrewsDIN7971, DIN7972, DIN7973, DIN7981, DIN7982, DIN7983 ASME B18.6.4 ... assembly and disassembly. There are three different kinds of self tapping screws: thread forming, thread cutting, and thread rolling.Specifications: Head ... : 3/8" - 5"Features: Thread & Point Type: Type A, Type B, Type AB, Type 1, Type 23, Type 25, Type Hi ...