Midwest Fastener #9 Woodruff Keys Zinc Plated Steel

A woodruff key or half-moon key, is a semicircular shaped, removable key that fits into a matching keyway cut into a shaft, leaving a protruding tab. The tab mates with a matching slot on a device mounted flush upon the shaft e.g. a pulley, thus preventing the device from freely rotating about the shaft. It is widely used in machine tools and in the automotive industry. Diameter: 3/16" Length: 3/4" Material: Steel Finish: Zinc Shape: Woodruff Nominal Size: #9 Type: Woodruff Key