External Tooth Lock

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An external tooth lock washer, also known as an external tooth washer, is a type of lock washer with outward-facing teeth or serrations along the outer edge of the washer. These teeth are designed to grip the material it's being fastened to and provide resistance against the rotation and loosening of the fastener, such as a bolt or screw.

Key features and functions of external tooth lock washers include:

  1. External Teeth: The serrations or teeth on the outer edge of the washer bite into the material and create a locking action. This helps prevent the fastener from loosening due to vibration or other external forces.

  2. Load Distribution: External tooth lock washers also assist in distributing the load from the fastener over a larger area, reducing stress concentrations on the material.

  3. Enhanced Locking: They provide better locking performance compared to standard flat washers, making them suitable for applications where secure and stable connections are crucial.

External tooth lock washers are commonly used in various applications, such as automotive, machinery, and industrial equipment, where maintaining the integrity of fastened connections is essential. The choice of washer size and material depends on the specific requirements of the application and the type of fastener being used.