Double toothed lock washer

Double toothed lock washer  A double toothed lock washer is a type of washer that has two sets of teeth on the inner diameter of the washer. This design helps to provide a more secure locking mechanism by gripping the surface of the bolt or screw more effectively. The double toothed lock washer is commonly used in applications where vibration or loosening of fasteners is a concern, as it helps prevent the fastener from backing out.