Free Running Wire Thread Inserts

Free Running Wire Thread Inserts

Wire thread inserts can be used to strengthen threads, giving applications a longer life. They are rolled from high quality stainless steel wire and cold-drawn into a diamond shaped cross section, formed to the shape of a spring thread. Once the wire is formed into a helical coil insert and installed into a tapped hole, it provides a permanent and wear resistant thread in the parent material that is stronger than the original thread.

Product Details

Wire thread inserts can be used to strengthen threads, giving applications a longer life. They are rolled from high quality stainless steel wire and cold-drawn into a diamond shaped cross section, formed to the shape of a spring thread. Once the wire is formed into a helical coil insert and installed into a tapped hole, it provides a permanent and wear resistant thread in the parent material that is stronger than the original thread.

The inserts are designed to be greater in diameter than the tapped hole and compress as they are installed. This allows maximum surface contact area with the tapped thread, safely and permanently anchoring the inserts into place. The insert’s compensatory action shares the load over the entire bolt and hole, increasing holding or pull out strength. With a Recoil insert in place, load and stress are more evenly distributed.

Standard inserts are free-running, but screw-locking inserts are also available. Both free-running and screw-locking inserts are available on plastic strips for automated tooling systems.


Wire thread inserts create high-strength fastenings in softer core materials


The benefits of wire thread inserts

Manufactured from high quality Chromium Nickel Austenitic Stainless Steel, FYS inserts provide high performance internal threads that resist the effects of temperature and corrosion.

  • Corrosion resistant

  • Combat wear in threaded components

  • Resist the effects of temperature

  • Maintains bolt tension under severe vibration conditions

  • Permanent wear-resistant screw threads exceeding parent material strength

Designed to protect against failures due to stripping, seizing, corrosion, and wear

Their simple but unique design ensures a compound performance unrivalled by any other fastening method. They are particularly effective in applications for aerospace, automotive, electronics, and medical industries. The Wire Thread Insert features a unique   thread form that maintains bolt tension under severe vibration conditions.

FYS Technology Company  is an experienced, highly innovative company manufacturing wire thread inserts to a variety of industry accredited quality standards since 2004.

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