A-WK22-AI Woodruff Keys, 7/32 x 1-1/4One New Aftermarket Replacement Woodruff Key 7 32 x 1 1 4 This half moon shaped Woodruff key is a standard imperial fastener used to lock gears, pulleys, and hubs to rotating shafts in agricultural equipment, construction equipment, lawn and garden machinery, and general industrial applications. Seated in a curved keyseat milled into the shaft, the key prevents independent rotation between the shaft and the mounted component while also acting as a