Part of that is probably because we’ve gotten so good at making them that they’re seen as cheap commodities, but the physics and engineering behind the screw thread is interesting stuff.

A micrometer is a G clamp with jaws in its most common form around 25 mm in size, and with a very accurately calibrated screw thread. It has a handle with both a scale in millimetres or inches ...

Another important aspect of screw rotor manufacturing is the precision grinding of micro-pitch internal threads ... of cylindricity errors in crankshaft measuring machines has implications ...