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Self-Clinching Prevailing Torque Locknuts Prevent Mating Hardware From Loosening

PEM self-clinching prevailing torque locknuts provide ideal solutions to prevent mating hardware from loosening in service due to vibration or other application-related factors. This growing family of fasteners includes a variety of types and different locking-feature styles to satisfy a wide range of applications. Their use can save time and money compared with alternative chemical locking methods or patches.

PEMHEX locknuts integrate a nylon hexagonal element to create a reusable, non-metallic prevailing torque thread lock that eliminates possible galling and any need for lubricant. TRI-DENT locknuts achieve prevailing locking torque using an indenting process that deforms the top thread. PEMFLEX locknuts feature two rugged, semicircular flexing jaws that prevent loosening of mating hardware in especially severe service applications. Miniature locknuts and floating types develop prevailing locking torque through a process that elliptically squeezes the tops of the fasteners. All PEM clinch locknuts install permanently in thin metal sheets.

Depending on type, PEM locknuts demonstrate thread-locking performance equivalent to applicable NASM25027 specifications or meet relevant IFI or ANSI torque requirements. Versions are available in steel, stainless steel, or aluminum and in thread sizes from #2-56 and M2.5 through #10-32 and M5.

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