... DIN7981, DIN7982, DIN7983 ASME B18.6.4 & SAE J933 specifications Self Tapping ScrewsDIN7971, DIN7972, DIN7973, DIN7981, DIN7982, DIN7983 ASME B18. ... repeated assembly and disassembly. There are three different kinds of self tapping screws: thread forming, thread cutting, and thread rolling ... = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); self tapping screw