DIN6798A External Serrated Lock Washer

Internal Serrated Lock Washers 

Internal serrated Lock Washers, also known as toothed lock washers, are a type of washer with serrated teeth on the inside diameter. These teeth grip the surface of the bolt or screw to prevent it from loosening due to vibration or other forces.

Internal serrated lock washers are commonly used in applications where there is a risk of the fastener coming loose, such as in machinery, automotive, and construction. They provide a secure locking mechanism that helps to keep the fastener in place.

These lock washers are available in various sizes and materials to suit different applications. They are easy to install and can be used with a wide range of fasteners. Internal serrated lock washers are a cost-effective solution for preventing loosening and ensuring the stability of connections.