The thread or thread die (also called threaded bearing) is a manual cutting tool used for manual threading of bolts and screws, which must be calibrated according to the characteristic of the thread in question. The material of the dies is high speed steel (HSS). The main characteristics of a screw that is going to be threaded are its external or nominal diameter and the pitch of the thread.

It is also used to make the threads of pipes or tubes to build conduits, for example, for water. These pipes can be made of various materials such as iron, bronze, copper, PVC (polyvinyl chloride), etc.

According to the consistency of the element to be threaded, the hardness of the material with which the tap is made should be.