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Threading

Choose Grainger for the durable, high-quality threading tools you need for your tooling and machining operations. Our selection of die sets has the assorted standard-size ranges to help ensure you have the right size die for your application. We have dies in rugged carbon steel and high-speed steel dies for maximum durability. Carbon steel hexagon dies are available with a permanently etched size and starting side on each die for easy reference. Find the drill bit and tap set you need to drill, tap and debur mild steel, aluminum, copper, brass and plastic in just one step. Tap and die sets can help you restore or create internal or external threads in a wide range of sizes. Our thread mills feature internal, external, and helical thread mills, in single profile, straight and flute designs to help you complete a range of thread milling jobs.