WOODRUFF KEY

The Barnes Woodruff Key FST-021 is a precision-engineered fastening component designed for secure connections between shafts and hubs in various mechanical applications. This small but critical part prevents relative rotation between a shaft and its driven component, ensuring reliable power transmission in machinery. Having quality Woodruff keys on hand is essential for maintaining operational efficiency and preventing downtime from component slip.

Woodruff keys work by fitting into a semicircular keyway cut into both the shaft and hub, creating a mechanical lock that resists torque and rotational stress. The Barnes FST-021 is manufactured to exacting tolerances, ensuring a snug fit that prevents wobble and maintains concentricity—critical for balanced operation of pulleys, gears, and driven accessories. Its compact dimensions of 0.25 x 0.1 x 0.5 inches and minimal weight of 0.01 lbs make it suitable for various applications.

Mechanics, engine builders, and performance enthusiasts rely on the Barnes Woodruff Key FST-021 for dependable keyway retention. Its design accommodates standard keyway profiles, making it a versatile replacement part for both OEM restoration and aftermarket performance builds. Whether you're rebuilding machinery or upgrading components, this Woodruff key ensures a secure fit and reliable operation.