Heli-Coil® Master Thread Repair Kits

When installed into Heli-Coil® STI tapped holes, inserts provide permanent conventional 60° internal screw threads that accommodate any standard bolt or screw. Heli-Coil threaded inserts boast a high wearing tensile strength, low thread friction with tight tolerances, and a high surface quality as well as corrosive- and heat-resistant properties. With Heli-Coil threads, tapped holes are strengthened and thread life is dramatically increased even after repeated assembly and disassembly. Tapped holes are easily incorporated into existing designs. 

Master Thread Repair Kits
Heli-Coil inserts are available in master thread repair kits in inch and metric sizes.
All kits contain a drill, tap, tool, and inserts for each size listed below.