Hillman Zinc-Plated Nylon Insert Stop Nuts are ideal for securely fastening 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. The stop nuts are designed to be fastened to a bolt when mechanically joining materials The stop nut's feature nylon inserts that offer added security against loosening from vibration The stop nuts feature a zinc-plated finish - installation is easy with hand tools such a combination wrench Parts feature coarse 1/4-in-20 screw thread 6 zinc plated stop nuts included
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