We are offering screw thread helical inserts, stainless steel helical inserts made from aisi 304 316 grade steelcuthard threading inserts provide means for protecting and strengthening all types of tapped threads. Our inserts are manufactured from 18-8 stainless steel (aisi 304 aisi 316 dtd 734a ams 7245) and other materials all conforming to international helicoil thread specs of din-8140-1 and others. Available types - free running & screw lockingstandard notch screw threading availablenominal length - 1.0d, 1.5 d, 2.0 d, 2.5d, & 3d sizes availableall sizes and pitches available in mm and imperialmetric, imperial, unc, unf, bsw, bsf, ba, bsp and bscycle threads