They hold together everything from the most delicate watch to the largest bridge. The world is literally kept from coming apart by screws and bolts, and yet we don’t often give a thought to these ...

Translating rotary motion to linear motion is a basic part of mechatronic design. Take a look at the nearest 3D-printer or CNC router — at least the Cartesian variety — and you’ll see some mechanism ...

We may receive a commission on purchases made from links. If someone grabbed a random screw from a woodworking shop and asked you to identify it, what would you say? If you just said, "it's a screw, ...

One of the most critical factors in determining the reliability of a threaded-fastener joint is the force the tightened fastener exerts on an assembly, which is known as preload. And preload depends ...

Screws are designed with their intended materials in mind. Although it’s possible to use a drywall screw with a piece of wood ...

Screws get stuck, and it often takes ingenuity as well as elbow grease to get them unstuck. Back in the good old days, it was common practice to coat the threads of a screw with a little beeswax ...