Star washers are a specific type of washer designed to increase the locking force as well as torsional resistance by resisting torque applied by the nut, preventing it from unscrewing or separating. Featuring either internal or external tabs, star washers offer greater application suitability. These star washers are widely used in automobile manufacturing industries.
At CE  these washers are available in stainless steel, plain, or zinc plated finishes.