Double layered self-locking washer is a special type of anti loosening washer that uses a change in wedge angle to increase the tension of the bolt for anti loosening. Composed of two independent washers that interlock with each other. When a bolt or screw is tightened, the internal washer will compress outward, while the external washer will contract inward, forming a tight nested structure to prevent the bolt or screw from loosening
Features: Self locking function
Reliable sealing
Anti loosening
High temperature resistance and corrosion resistance
Reuse