Nylon Locking Hex Nuts come in a variety of materials, heights, body styles and wrench sizes. 

This locking nut relies on a nylon insert to create interference between the mating bolt threads. The nylon insert compresses to securely fasten the nut against the bolt, ensuring resistance to vibration and loosening.

Nylon lock nuts will not damage the threads a bolt or screw. Nylon insert color tone varies.