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Inserts Coils for Inch Series Thread Kit
These stainless steel insert coils are designed for use with our Perma-Coil Inch Series Thread Repair Kits (Part No. 3865), but they are also fully compatible with Heli-Coil® tooling. Insert length is 1.5 times the nominal diameter (example: 1/4-20 inserts are 3/8" long). Sold in packs in quantities indicated.
We also stock Metric Perma-Coil Kits (Part No. 3870-Size).