In the manufacture of metal workpieces, it is often necessary to machine threads. This is mainly because threaded connections are unavoidable when workpieces must be mounted or assembled to other parts. Generally speaking, there are two different ways to make threads. Read More

A spiral groove tap is a tool for machining threads. It is a type of tap, so named because of the spiral shape of its chip groove. Spiral groove taps are divided into left-hand spiral groove taps and right-hand spiral groove taps. The geometrical parameters of spiral groove taps are mainly reserved Read More