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Commonly used in automotive parts to increase the contact area with the locked part and spread the pressure on the surface of the locked part during locking.

Commonly used in automotive parts, it increases the contact area with the locked parts and has the resilience to evenly distribute the load of the screws. When multiple pieces of conical washer are stacked in a staggered manner to increase the rebound distance, it can produce a good anti-loosening effect.

Creates an elastic force between the head of the screw and the locked part, which distributes the load of the screw and prevents the screw from loosening due to slight vibration.

Combines the functions of anti-loosening clearance and surface protection of the locked parts, and effectively adjusts the locking distance.