Heli-Coil 8-Pitch inserts are a unique series of screw thread inserts designed for 8-pitch threaded holes. Compared with other methods, thread repair with Heli-Coil 8-Pitch inserts is fast and economical, providing better-than-original threads and saving expensive parts with a minimum of downtime.

The wire cross-section of Heli-Coil 8-pitch inserts is precisely engineered to reduce the pitch diameter of a standard 8-pitch tapped thread by exactly 1/8" which allows Heli-Coil assemblies to be made in normal 1/8" thread-size increments. As an example, if a 1-1/4"-8 thread is damaged, it can be readily repaired by tapping with the next 1/8" larger standard 8-pitch tap—in this case, 1-3/8"-8. No special taps are ever needed. When the insert is installed, the resulting assembly provides a permanently repaired thread to the original 1-1/4"-8 size.

Heli-Coil 8-Pitch inserts can be used in existing bosses and flanges where repairs are impossible with other types of inserts or solid bushings. By using Heli-Coil 8-Pitch inserts you can save valuable parts that would otherwise become scrap.

Fast Facts:

  • A unique series of screw thread inserts especially designed for 8-pitch threaded holes.
  • Helps save valuable parts that would otherwise have to be scrapped.
  • No special taps are ever needed.
  • Available in 18-8 stainless steel and Inconel X-750.

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The availability of the products described on this site, and the product descriptions, may vary from country to country. Consult your STANLEY Engineered Fastening Account Executive or your local distributor for specific product information.