The Hillman Group 2162 1/4 X 1-1/4-Inch Machine Key, 6-Pack

Product Description Square keys are small bars of any length but its height and width are the same. It's a piece inserted between a shaft and a hub to prevent relative rotation. Square keys are common in general industrial machinery. From the Manufacturer Square keys are small bars of any length but its height and width are the same. It's a piece inserted between a shaft and a hub to prevent relative rotation. Square keys are common in general industrial machinery.