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.

$6.00 Shop Now The humble coarse-thread drywall screw is built to fasten drywall to wood or light-gauge steel framing, but it’s also a low-cost and simple fastener for making wood-to-wood ...

When you put it to use, the extractor penetrates a hole punched or drilled in the top of the screw and its reversed threads grab hold so that the screw can be twisted out. A selection of screw ...

The bearings actually squeeze the rod a little bit, making a temporary indentation in the surface that works just like a screw thread would. As the bearings roll on, the rod bounces back to its ...

The surface is lubricated with grease to prevent rust, the thread is clear and easy to repair. Easy to Use: The positioning groove of the die should be aligned with the fastening screw in the ...