High-Strength Stainless Steel Wire Thread Inserts
The High-Strength Stainless Steel Wire Thread Insert is a helical coil formed from diamond-shaped stainless steel wire. Screwed into a prepared hole, the coil becomes a permanent, resilient internal thread that stands proud of the parent material in strength and wear resistance.
The coil behaves like a spring. When a bolt is tightened into it, the insert deflects slightly and then presses back against the bolt thread, distributing load over a longer engagement length. That is why a wire insert increases the effective shear strength of a threaded hole in aluminum, magnesium or plastic far beyond what the base material could achieve on its own.
Because the insert is stainless steel, it also resists wear, corrosion and galling, and it holds its preload when subjected to vibration. The same properties make wire inserts a standard repair solution: a damaged or stripped thread can be reworked to full — often improved — strength without scrapping the component.
Critical thread protection for high-performance and safety-standard industries, wire thread inserts serve aerospace and defense applications including aircraft engines and structural components, and automotive manufacturing where aluminum engine blocks and castings require strong, repeatedly used threads.
They are equally important in maintenance and repair work, where a failed thread can be recovered rather than replaced.
