7.9.3.14.1.  Cylindrical thread by length
7.9.3.14.1.1. Male thread using the example of a pin
7.9.3.14.1.1.1. Regular thread
7.9.3.14.1.1.2. Various thread pitches and derived automatic calculations for e.g. line description and core diameter
7.9.3.14.1.2. Internal thread using the cap nut as an example