Internal Tooth Lock Washers lock into bolt head or nut to prevent backoff rotation, which works best with smaller head screws, such as fillister heads. Hardware is constructed of high quality steel for long lasting durability.

Split Lock Washers provide greater bolt tension and hardened bearing surfaces to create more uniform torque control to resist bolt loosening from vibration and corrosion.

4 External Tooth Countersunk Lock Washer Zinc.

External Tooth Lock Washers secure bolt heads or nuts to increase the bearing area and offer greater hardness so that the nut or bolt can be rotated without distortion of the bearing surface. Hardware is constructed of high quality steel for long lasting durability.