Counter Shaft Locking Washer

The counter shaft locking washer from BERT TRANSMISSIONS is a precision retention component engineered for high-performance manual transmission builds. This small but critical fastener secures the counter shaft in place, preventing unwanted axial movement during acceleration, deceleration, and gear transitions. Whether you're assembling a street-strip transmission or refreshing a worn gearbox, this washer ensures reliable shaft positioning and eliminates play that can lead to grinding, missed shifts, or internal damage.

Manufactured from hardened steel with a cadmium finish for corrosion resistance and superior load-holding capacity, this counter shaft locking washer features a 0.95 inch outer diameter, 0.284 inch inner diameter, and 0.156 inch thickness—dimensions designed to mate precisely with BERT transmission assemblies. The cadmium plating provides durability in high-temperature gearbox environments while maintaining a consistent friction surface between mating components. Its compact 0.03 lb weight belies its critical load-bearing function, as it must withstand the shear forces generated during torque transfer through the transmission.

Mechanics and transmission builders specializing in BERT transmissions will recognize this washer as an essential OEM-equivalent component for any rebuild, upgrade, or repair project. Proper installation ensures zero slack in the counter shaft assembly, directly contributing to shift quality and transmission longevity under aggressive driving conditions. This is a must-have service part for anyone maintaining or modifying a BERT transmission platform for racing, high-performance street applications, or restoration work.