Threading units
Introduction
The metric thread system is a family of standardized thread pitches based on the SI (1946). Its advantages include tensile strength, due to the large threading angle. Among its defects is the fact that depending on the position of the threads, it can lose effectiveness.
The thread pitch or normal pitch in metric screws is the distance that a thread advances in each complete turn. E.g. x0.4, x0.5mm….