These nylon insert stop nuts, also known as lock nuts, are ideal to securely fasten a bolt when connecting materials. Use these hexagonal nuts with bolts and washers of the same material, finish, and grade. The nylon ring inside the nut 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.
- Stop nuts are designed to be fastened to a bolt when mechanically joining materials 
- Stainless steel offers best-in-class corrosion resistance 
- Install with hand tools such as a combination wrench 
- Nylon insert offers added security against loosening from vibration 
- Recommended for use with bolts and washers of a similar size and finish 
- Parts feature coarse #6-32 screw thread 
- 10 pieces per retail package