Cutting a thread is accomplished in just three steps. Chamfer the core hole with a countersink. 4 mm) in diameter and holes in odd-shaped parts. For imperial threads the application area. In today's guide, four different methods for cutting single-point threads on the lathe will be explored. How Is the Screw Thread Formed? Let's start by understanding a little bit about how screw threads. Pitch: It is defined as the distance between two points starting from one point on one thread to another point at a similar location on the consecutive thread, measured parallel to the axis of the cylinder. In this article, we'll introduce what is a thread in manufacturing, thread types, tips of thread design and machining, as well as how to cut thread on a lathe machine, including internal thread cutting and external thread cutting.