Threading is most often done using a tap (internal) or a die (external). This is a tool that accurately reproduces the thread profile. Using this method requires appropriate synchronization of the feed and RPM values. The CNC machine independently determines the feed to the tool’s rotational speed, taking into account the thread pitch. Threads can also be made using milling, using a special thread milling cutter (with a single or multiple blade). In this method, the tool moves around its own axis and along a helical line. This method can be used to make both internal and external threads.

Another method for making a thread is embossing. The thread is cold formed without the formation of chips. This is used for softer materials. The thread obtained in this way has twice the load-bearing capacity, but has certain limitations, such as the possibility of making only on precision machines, the higher cost of thread formers and the ban on their use in the food industry, due to the possibility of creating pockets on the tops of the edges of the inner diameter, in which residues could accumulate, even leading to contamination. In all of the above-mentioned methods, previous preparation of the cylindrical surface of the hole or plug with a specific geometry is also required, depending on the thread being made.