Screw thread inserts are formed from high quality stainless steel wire with a diamond shaped cross section, wound to the shape of a spring thread. Once the wire is wound into a helical coil and installed into a tapped hole, it provides a permanent and wear resistant thread in the parent material that is generally 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 pull out and torque out strength. With a screw thread insert in place, load and stress are more evenly distributed over the assembly.

Locking Inserts combine the strength of the original free-running insert with a locking function to provide a long thread life in the most vibration-intensive environments.

Where screw thread inserts are appliedd?

Original equipment manufacture

Screw thread inserts, as an innovative industrial fastening system, are normally used for lighter weight materials such as aluminum and magnesiumm alloys while still achieving high strength and reliability in the threaded fastener assembly. They are widely used by manufacturers in following fields. 

Aerospace and military industry

High-speed train and railway industry

Automotive 

Industrial and consumer electronics

Transport and ship building

Engineering and farm machinery 

Manufacturing equipment 

etc...

Repair

When a thread is damaged, a screw thread insert can provide you: 

Quickest and simplest method of repair to stripped or damaged threads

A superior thread with great holding power

Most cost-effective method of repair

Returns thread to the original size

Generally stronger than the original female thread

Our product line inlcudes different thread support products in a wide variety of sizes and thread forms, including metric coarse, metric fine, UNC, UNF, sizes from 1.6mm to 48mm in virtually all thread forms. Special or custom sizes are available on request. 

Material: Standard inserts are manufactured from 304 stainless steel. We also provide inserts of other material like phosphor bronze and Nitronic 60. Different coatings or platings may be available on request.

Contact us by following for more information of our products and a successful cooperation.

E-mail: info@sunbotech.cn

Tel: +86-20-38284227