Dies
- Dies are used for both creating new threads, as well as cleaning or repairing dirty or damaged threads. Dies designed for creating new threads are made with high speed steel, as opposed to re-threading dies, which are made from carbon steel. Thread dies are available in the split round adjustable, or hex varieties. The hex dies are fixed, whereas the split round dies can be adjusted with a set screw. Round die holders are available in a variety of diameters for the split round adjustable dies.