Grade C zinc nylon insert locknuts

A Grade C Zinc Nylon Insert Locknut is a medium-duty fastener with a zinc-plated finish, offering greater proof load and tensile strength than standard Grade 2 Zinc alternatives, suited for moderate-duty fastening applications where additional strength and vibration resistance are required.

Nylon insert locknuts have a six-sided nut body with a nylon collar permanently embedded in the top of the nut, designed to grip the threads of a mating bolt or rod and resist loosening from vibration without damaging the fastener. Their six-sided body allows for easy tightening with standard wrenches and sockets, and the medium-carbon steel construction provides reliable performance in moderate-duty assemblies where standard Grade 2 fasteners fall short.