Hi Collar Split Lock Washer - 3/8" - Thru Hardened Medium Carbon Steel - Plain, Pack of 100

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.

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.

Silicon Bronze Split Lock Washers are manufactured with a trapezoidal cross section that deflects under load and can be used with or without a Silicon Bronze Flat Washer. They provide marginal resistance to vibration loosening and are ideal in applications where fasteners have a tendency to rotate or lose friction. Silicon Bronze Split Lock Washers are the ideal choice when working in highly corrosive environments or marine applications. They are covered by ASME B18.21.1. Special Features: Tolerates Extreme Temperatures, Harder than Brass, Corrosion Resistance Applications: General Purpose

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.

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.