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Create threads in the holes of almost any material with these tough, wear resistant thread mills, available with your choice of straight or helical flutes. With some of these products, one thread mill can thread a range of hole diameters. The mill cuts from bottom to top, spiraling up along the hole wall as it goes. Products vary by number of flutes, length of cut, cutting diameter, pitch, dimensions and other considerations. As long as we’re machining with carbide mills, be sure to see our carbide end mills.