5/16" Lock Washer Split Ring Black Oxide 18-8 Stainless Steel Qty 100

Split ring lock washers are used to prevent nuts, bolts, and screws from vibrating loose. Lock washers are split at a certain point and bent giving them a helical shape. These lock washers are compressed during installation adding extra pressure to the nut or bolt and material. This extra pressure creates a resistance to rotation. The edges or the split may add extra holding power by digging into the nut. Split ring lock washers are used where constant vibration occurs.