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The Grainger Approved Square End Mill Single End is a high-speed steel end mill with a square end for milling slots, keyways, and pockets. It has four flutes and a right-hand spiral. The overall length is 3 inches and the shank diameter is 0.25 inches. The mill diameter is 0.375 inches with a 0.125 inch shank length. It has an American National Standard Stub length shank and is designed for general purpose milling in most material. The end mill's peripheral cutting edges can mill axially and interpolate.
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