More About Our Wire Threaded Inserts

Wire thread inserts are helically coiled fastening devices that provide permanent, wear-resistant screw threads that exceed the strength of most parent material; the inserts are designed to protect tapped holes against failures due to stripping, seizing, corrosion, and wear.

The Optia® brand includes two wire thread insert product families: Heli-Coil®, renowned as The Original wire thread inserts, and Spiralock® which incorporates the Spiralock® 30° wedge-ramp thread-form design in the inner wire geometry.

Heli-Coil® inserts come in two styles: the standard or Free Running insert which provides a smooth free-running thread and Screw-Locking which provides self-locking torque on the male member by a series of “chords” on one or more of the insert coils. Both are available in tanged or tangless version.

Spiralock® wire thread inserts are available in two styles: tanged and Drive Notch (DN®), engineered with no tang.

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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.