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 ...

Threaded and nonthreaded conventional plastic fasteners have the same dimensional thread class and fit standards as those for metal fasteners. Sizes range from 00 to in. in diameter and in lengths up ...

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...

Screws may be commonplace, but that doesn't mean they're simple. A screw is any shaft with a corkscrew groove carved around its surface and, regardless of their design, screws are usually used to ...

Inspection for bone screws is a complicated process. Using a thread gauge measurement approach may enable a streamlined manufacturing process. Controlling the manufacture of bone and pedicle screws ...