Installation Best Practices for External Tooth Lock Washers

 

Even high-quality external tooth lock washers fail if installed incorrectly. Proper placement between the bolt head or nut and the grounding surface ensures maximum engagement. Teeth should face the surface to cut through paint, dirt, or oxidation, creating a solid electrical connection. Proper torque is essential: too loose reduces locking, too tight flattens teeth and compromises conductivity.

Mechanics should always replace old washers during maintenance, as reused washers lose bite and electrical reliability. Avoid over-tightening and ensure washers match bolt sizes precisely. Following these practices ensures secure mechanical fastening, consistent conductivity, and long-term performance. With correct installation, external tooth lock washers protect automotive electronics from vibration, corrosion, and electrical faults, supporting the safe operation of vehicles.

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