Pinion Bearing Lockwashe

The Winters Pinion Bearing Lock Washer (SKU WIN5056) is a precision tab-style lock washer designed for secure fastening of pinion shaft jam nuts in differential assemblies and drivetrain systems. This component is essential for maintaining the integrity of drivetrain components under high stress and vibration conditions.

Constructed from steel, this lock washer prevents rotational loosening, ensuring reliable performance in powered vehicle operation. The tab-style design creates a mechanical lock between the washer tab and a corresponding slot or flat surface, effectively resisting vibration-induced fastener rotation.

Technicians and rebuilders working on rear axle assemblies, transfer cases, and similar drivetrain components will find this specification-matched lock washer critical for original equipment replacement and restoration work, ensuring the factory integrity of jam nut installations.