Description
When a pulley or gear starts slipping on a shaft, it’s usually because that little square key has worn out or sheared off completely. You’ll notice the power isn’t getting transferred like it should—maybe the PTO won’t engage properly, or a fan belt keeps slipping no matter how tight you make it. This 5/16″ square steel key is the simple fix that gets everything lined up and locked in place again.
What You’re Getting
- Precision-cut 5/16″ x 5/16″ square profile that fits snugly in keyways
- Quality steel construction that handles the torque and stress of farm equipment
- Direct replacement for worn or damaged keys on shafts and pulleys
- Universal fit for any application requiring this standard size
Built for Real Farm Work
This handy little part works in countless applications across your farm equipment. You’ll find it securing pulleys on alternators and fans, locking gears in place on PTO drives, or keeping sprockets aligned on various mechanical systems. Whether it’s on your tractor, implement, or shop equipment, this key ensures power gets transferred where it needs to go.
Made to Last
Don’t let the small size fool you—this key takes on some serious loads. The steel construction handles the twisting forces and vibration that come with farm work, while the precise dimensions ensure it won’t work loose once installed.
Installation Notes
Make sure the shaft and keyway are clean before installation, and check that the key slides in smoothly without forcing. If you’re replacing a sheared key, inspect the keyway for damage or burrs that might cause problems down the road. It’s always smart to keep a few spares in your toolbox.
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