Self-Clinching Prevailing Torque Locknuts Brochure
The product family consists of all-metal versions (engineered to generate torque resistance with elliptically squeezed threads, flexing jaws, or purposely deformed threads) and nylon insert types (integrating plastic inserts for the torque resistance). Individual PEM locknut types are designed with particular application benefits in mind. They can offer high clamp strength, capabilities to adjust for mating hole misalignment (using floating threads) or install closer to the edge of a sheet, or enable lighter weight assemblies (achieved with miniature versions). PEM locknuts are available in steel, stainless steel, or aluminum and in thread sizes from #2-56 and M2.5 through #10-32 and M5. Depending on type, they demonstrate thread-locking performance equivalent to applicable NASM25027 specifications.