The internal tooth lock washer is a circular washer with teeth that extend inward. It is a preferred type of washer when the teeth must remain hidden for a finished appearance. Use with nuts and bolts of the same material for proper function.
- Lock washers place tension against a nut after tightening, to help prevent the nut from loosening
- Called out size is the inner diameter of the washer
- Size: #4
- Stainless-steel material