Reversible Prevailing-Torque Locknut

Available in one, two, or three deflection patterns, this all-metal reverse locknut features deflected threads at its center, which create a reliable two-way locking mechanism. HEX-LOC® locknuts are available in American Standard and Metric, hex-finished, jam, heavy, hi, square, acorn, weld, track, and flange nuts.

For special applications, HEX-LOC® locknuts are available in special light or heavy torque versions.


Steel Grade 2-5-8, 2H/DH, Monel, brass, bronze, aluminum alloys, and stainless steel


UNC, UNF or 8UN Series, Class 2B, 3B, left-hand thread, and Metric


Plain, zinc, cadmium, mechanically galvanized, and other platings and coatings