Spiralock® 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. Spiralock inserts are unlike any other wire thread insert for the fact that the inner diameter wire geometry incorporates a 30° wedge ramp thread form design. They are available in two styles: Tanged and Drive Notch, engineered with no tang.