. These Kodiak Cutting Tools® solid carbide multiple-form thread milling cutters are designed to travel around the workpiece in a helical interpolation.50 Carbide Threadmill Metric ALTIN Coated As with all of our solid carbide tools, these threadmills are manufactured using state-of-the-art machinery, manufacturing processes and inspection techniques, making them the preferred choice of carbide thread mills for machinists wanting to produce high quality parts with maximum tool life.