Hillman Stop Nut, Nylon Insert, 7/16 x 1-1/2-in, 4-pc

Hillman's stop nuts are designed to keep bolts from coming loose over time. The nylon ring insert creates friction that resists rotation of the mating fastener, helping to ensure your connections stay tight. Use these nuts with hex bolts for any job where vibration resistance and corrosion protection are important, like attaching machinery or equipment to floors or walls. The satin finish offers a subtle but functional look that will blend into the background for years.