4mm x 7.5mm Zinc Plated Steel Woodruff Keys (5 pcs.)

Specifications

Diameter: 4mm Length: 7.5mm Material: Steel Finish: Zinc Shape: Woodruff Type: Woodruff Key Box of 5. 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.

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