Hillman 5/16 in. Stainless Steel SAE Nylon Lock Nut 50 Pk

18-8 stainless steel nylon insert stop nuts resist corrosion to help ensure your project is done right. Compressible nylon inserts bind the nuts to eliminate the need for lock washers and prevent loosening due to vibration. The stainless steel finish offers best-in-class corrosion resistance. *.