1/4" X 3/8" X 1-1/4" Shaft Key - Aftermarket Replacement, Fits Various Equipment (Commercial 391-1781-021, Permco W09-02)

About This Product

Need a replacement shaft key for your equipment? This 1/4\ x 3/8\ x 1-1/4\ key (also called a Woodruff key or half-moon key) is an aftermarket part that fits where the original specifications call for these dimensions. It's compatible with Commercial part number 391-1781-021 and Permco W09-02, among others. These little keys are crucial for connecting gears, pulleys, or sprockets to shafts - they fit into a keyway slot to prevent rotation and transfer power. Over time, they can wear down or shear off if equipment is overloaded. Made from durable steel, this replacement key will get your machinery back up and running. Installation is straightforward if you're familiar with mechanical assemblies - just align the keyway, insert the key, and slide the component over it. Always check your equipment's manual or measure the old key carefully to ensure this is the correct size before ordering. A small part that can solve big problems!