Nylon insert lock nuts are hexagonal nuts used with bolts and washers of the same material, finish, and grade. The interior nylon ring creates rotational resistance when displaced by a mating male threaded fastener, thus preventing loosening. The nylon insert also helps resist vibration and adds extra corrosion resistance.

• Used for fastening to a bolt when mechanically joining materials together
• Nylon insert for added security to keep nut in place
• Use with bolts and washer of the same material and finish
• High corrosion resistance
• These grade 8 hardened nylon insert lock nuts feature a yellow dichromate finish