Internal/External Tooth Lock Washers

Internal-external lock washers are a specialized type of lock washer that combines features of both internal lock washers and external lock washers. They too are circular with teeth facing both inward and outward intended to provide mid-level resistance to loosening. The teeth are designed to bite into both the fastener and surface, creating a dual hold for resistance against vibration, torque or other forces. Offering a limited selection of standard sized, zinc plated for moderate corrosion resistance.