Standard Woodruff Keys, Hillman, #504 -1/8 in x 21/32 in USA

An assortment of plain steel woodruff key variants from The Hillman Group. Woodruff keys are semi-circular keys that are commonly used for mechanical applications. It fits in a half-moon shaped slot, in a shaft, leaving the flat side of the tab exposed. They are designed not to function when excessive force is placed on the shaft.

• Woodruff keys are ideal for securing wheels or pulleys to a spindle
• Woodruff keys eliminate the need to mill holes near shaft shoulders
• A second bar, that slides over the shaft, has a slot in it to accommodate the key
• Made of high-strength steel with a plain finish
• These woodruff keys measure 1/8 in THK x 21/32 in long and conform to a #504 USA standard key type