3mm x 3.7mm Zinc Plated Steel Woodruff Keys

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Diameter: 3mmLength: 3.7mmMaterial: SteelFinish: ZincShape: WoodruffType: Woodruff KeyBox of 5.A woodruff key or half-moon key, is a semicircular shaped, removable key that fits in to 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. Show more