Keysert® and Keensert® Inserts

KEYSERT® and KEENSERT® thread repair inserts are the solid alternatives for thread repair, designed to repair damaged threads or for use in original equipment. Keyserts® and Keenserts® provide easy installation and versatility. 


Featuring a key-locking action that prevents rotation due to vibration or torsion, commercial-grade Keyserts® and Keenserts® can be used in a wide range of materials and applications. Commercial-grade Keyserts® are available in carbon and stainless steel, both inch and metric series, and are supplied in Thinwall, Heavy Duty, Extra Heavy Duty, and Solid styles. Keyserts® are offered individually or in kits. Available in stainless steel, Keenserts® are manufactured and tested according to MIL-I-45914 rev A. This rigorous process includes testing internal and external threads (proof and pull-out), torque-out, locking torque (where applicable), non-destructive testing, and magnetic permeability testing. In addition, Keensert® offers complete traceability and is available in internal thread-locking and miniature sizes.



Important Note • These inserts are not recommended for use in brittle materials, such as cast iron or plastic.





Insert Material
Inside Thread
Outside Thread
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