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Come to Grainger for aluminum and steel key stock in a range of tolerances and a variety of sizes. Use keystock in machines with rotating devices to provide torque between shafts and pulleys, gears and sprockets. Undersized keystock works well where close or undersized tolerances are required. Oversized tolerances may require filing for proper fit into keyway. Shop today for key stock from Grainger and take advantage of easy online ordering!