External Thread Cutting Dies

The dies in these sets have a narrower width than standard dies making them a good choice for thread repair in tight spots.

External thread cutting dies.

High speed steel adjustable round dies have a set screw that adjusts the thread depth to over or under cut threads for a precise fit. Die sets cut several sizes of external screw threads. Thread forming and thread rolling are processes for forming rather than cutting screw threads with the former referring to creating internal threads and the latter external threads in both of these processes threads are formed into a blank by pressing a shaped tool commonly called a thread rolling die against the blank in a process similar to knurling. They stay sharper longer than carbon steel dies and are used for creating new external threads on parts made from a variety of materials including steel and nonferrous metals.

An external thread also known as a screw thread is cut by hand with a round die which is fixed in a die stock. An adjustable die may be adjusted either by an integrated screw or by a set of screws set in to the die holder termed a die stock.