What are Screw-Turned Threads?

Screw-turned refers to a type of thread that is cut on the inside of a hole or opening, typically in a cylindrical or tapered shape. The term "screw" is used because the thread is designed to be rotated, or "screwed," into place, much like a screw is inserted into a hole and tightened with a nut.

Screw-turned threads are commonly found in parts such as bolts, nuts, and screws, but can also be found in other components such as gears and shafts. The threading on these parts is typically created using a cutting tool, such as a tap or die, which cuts the threads into the metal as it is being formed.

Screw-turned threads are different from other types of threads, such as machine threads, which are cut on the outside of a cylindrical part and are designed to be mated with a corresponding threaded opening. Screw-turned threads are typically used in applications where high strength and precision are required, such as in machinery and equipment.