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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.

We offer two brands of wire thread inserts: 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 provided self-locking torque on the male member by a series of “chords” on one or more o 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.