Helical Screw Thread Inserts, commonly called by their trade-name Heli-Coil®, are inserts made from diamond shaped coiled wire. The insert is screwed into an internally threaded hole, and the internal surface of the insert provides a threaded surface that is stronger that the parent material. These inserts are usually used as part of a Thread Repair Kit, when the threads of an internally threaded hole are damaged.
Helicoil Insert Diameters
Helicoil Insert are available on the FCH Network with Imperial/US diameters that range from #0 to 6 and with Metric diameters that range from M1 to M48.
Helicoil Insert Lengths
Helicoil Insert are available on the FCH Network with lengths that range from 3/16 to 10.
Helicoil Insert are available on the FCH Network in materials that range from Steel to Nylon (Polyamide)