External Thread Cutting Dies

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.

External thread cutting dies.

A die cuts an external thread on cylindrical material such as a rod which creates a male threaded piece that functions like a bolt dies are generally made in two styles. An external thread also known as a screw thread is cut by hand with a round die which is fixed in a die stock. Round dies have three or more cutting edges depending on their size. 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.

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. Die sets cut several sizes of external screw threads.