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 ...

The degree to which a ball screw performs well in the field is the direct result of the process used to make it. Grinding, rolling, and whirling are the most common ways to thread ball screws. Some ...

William Sellers knew that the end of the hand-tooled machine age was nigh. So he grabbed the manufacturing elite by the nuts and bolts and dragged them into the mass production era. A case study in ...