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.

This effectively pulls the bolt up through the jam nut. The threads of the bolt are then in contact with the top flanks of the threads within the jam nut, while simultaneously contacting the upper ...

The wood screws were bronze or silver. They made the threads by filing them, or by soldering on a wire wound in a spiral. But the screw was lost with the fall of the Roman Empire. The first ...