A-WK23-AI Woodruff Keys, 1/4 x 3/4
A-WK23-AI Woodruff Keys, 1/4 x 3/4
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One New Aftermarket Replacement Woodruff Key, 1/4" x 3/4" (A-WK23-AI)
This 1/4" x 3/4" Woodruff key is a semi-circular (half-moon) shaped drive key used to secure pulleys, flywheels, gears, and other rotating components to a shaft. It locks into a matching half-moon keyway machined into the shaft and engages a longitudinal slot in the mating hub, preventing the two from rotating independently and ensuring precise alignment during operation. At ANSI key number 806, this is a standard imperial-size key widely used across agricultural, lawn and garden, and small engine applications including tractors, mowers, and outdoor power equipment. The key is also designed to act as a fail-safe: under severe overload (such as a blade strike), the key shears before damage occurs to costlier engine or drivetrain components.
Specifications
- Width: 1/4 in. (0.250 in.)
- Diameter: 3/4 in. (0.750 in.)
- Profile: Semi-circular (Woodruff / half-moon)
- ANSI Key Number: 806 (per ANSI B17.2)
- Material: Steel
Replaces Part Number(s):
A-WK23, A-WK23-AI
New aftermarket replacement part - not remanufactured, not used.



