About Keysert
About Keysert
Keysert is a line of solid, one-piece, key-locking threaded inserts manufactured by Howmet Fastening Systems, designed to repair damaged threads or to be installed in original equipment for added thread durability. Unlike coiled wire inserts, Keysert's design uses locking keys that provide a positive mechanical lock, preventing the insert from backing out due to vibration or torsional loading.
Keysert inserts are available in carbon steel or stainless steel, in both inch and metric thread series, and are offered in thinwall, heavy-duty, extra heavy-duty, and solid insert styles. These can be purchased individually or as part of kits covering a range of sizes, making the line practical for both OEM production runs and field thread-repair work.
For maintenance teams dealing with stripped threads in aluminum, cast iron, or other soft base materials, Keysert's mechanical locking design offers a robust alternative to standard helical inserts. ChatMRO indexes the Keysert catalog so buyers can search by thread size, material, and insert style to find matching part numbers.
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Frequently asked questions
How does a Keysert insert differ from a standard helical wire thread insert?
Keysert inserts are solid, one-piece, key-locking inserts rather than coiled wire, and they use mechanical locking keys to prevent rotation from vibration or torsion. This design provides a more positive mechanical lock than many helical insert designs.
What materials are Keysert inserts available in?
Keysert inserts are available in carbon steel or stainless steel, in both inch and metric thread series. Buyers can choose thinwall, heavy-duty, extra heavy-duty, or solid insert styles depending on the application's load requirements.
Can Keysert inserts be purchased as a kit, or only individually?
Both options are available; Keysert inserts can be purchased individually for a single repair or as part of kits covering a range of sizes. Kits are often preferred by maintenance shops that need to handle various thread sizes in the field.
What is the difference between Keysert and Keensert products?
Keysert is the commercial-grade line of key-locking threaded inserts, while Keensert is the high-grade, stainless steel line manufactured and tested to MIL-I-45914 rev A military specifications. Keensert inserts undergo additional testing including proof, pull-out, and torque-out testing.
What base materials are Keysert inserts best suited for?
Keysert inserts are commonly used in softer base materials such as aluminum or cast iron, where original threads are prone to stripping or damage. The key-locking mechanism helps the insert resist pull-out in these lower-strength materials.