HeliCoil Threaded Inserts

HeliCoil® Threaded Wire Insert Systems are coiled-wire threaded inserts used to create internal screw threads for standard-sized fasteners. They’re part of Stanley Engineering’s Optia product line that boasts one of the largest varieties of aerospace and high-performance fasteners and related products. To identify the part number(s) you need, select the orange Part Number button below, then send us your request for a quote.

What are HeliCoil Screw Locking Wire Inserts?

HeliCoil Screw Locking Threaded Wire Inserts are designed to create load-bearing joints in metal materials. When installed into a HeliCoil tapped hole, the threaded insert provides permanent conventional screw threads. These coils serve as a locking device by gripping the threads of the installed screw, effectively preventing the screw from loosening under vibration or impact. They permit frequent removal and reassembly of bolts without loss of torque.



What are HeliCoil Free Running Wire Inserts?

HeliCoil Free Running Wire Inserts include internal threads that are true to gauge and can be used from both ends. Every free-running thread of the thread insert is precision formed of extremely hard, diamond-shaped stainless steel. Learn more by watching this video:


What are HeliCoil Tangless Inserts?

Tangless threaded inserts provide permanent, wear-resistant screw threads. They eliminate the need for tang retrieval and can be easily adjusted or removed after installation. No loose tangs are left behind from tangless inserts, so they’re ideal when foreign object debris cannot be present in critical applications.

We offer HeliCoil tangless inserts in both Screw-Locking and Free-Running styles. The “Free-Running” tangless inserts provide a smooth free-running thread, while “Screw-Locking” tangless inserts provide self-locking torque on the male member by a series of chords on one or more of the insert coils.


Other Products and Materials

We have worked closely with our customers throughout the years to develop a supply chain of high-quality threaded inserts to repair stripped and damaged threads with HeliCoil thread inserts. Products include:

HeliCoil Screw Thread Inserts

  • Tanged – Free Running & Screw-Locking
  • Tangless – Free Running & Screw-Locking
  • 8-Pitch
  • Oversize™ & Twinsert®
  • Pipe Thread
  • Self-Tapping

HeliCoil Screw Thread Materials

  • Stainless Steel
  • Inconel
  • Phosphor Bronze
  • Nitronic 60 ®
  • Titanium

HeliCoil Screw Thread Coatings & Platings

  • Dry Film Lubricant
  • Primer Free ® II
  • Cadmium Plated
  • Silver Plate
  • Color Coded

HeliCoil Installation Tools
Tang Break-Off & Insert Extraction Tools
HeliCoil Taps & Gages
HeliCoil Kits


If you’d like to learn about other types of threaded inserts and related products, please contact us for more information. Our friendly, helpful staff will be more than happy to help you solve your needs.