Uxcell 1/4-20 UNC Nylon Insert Hex Lock Nuts 304 Stainless Steel Plain Finish 50 Pack

Uxcell 1/4-20 UNC Nylon Insert Hex Lock Nuts 304 Stainless Steel Plain Finish 50 Pack 1. Nylon-insert lock nut polymer insert lock nut or elastic stop nut is a kind of locknut. 2. It is a nut with a nylon insert that resists turning. 3. The plastic insert is placed at the end of the nut and its inner diameter (ID) is slightly smaller than the diameter of the screw. 4. The inserts deform elastically over the threads of the screw but threads are not cut into the nylon.