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 ...

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 ...

SECO TOOLS launched a new thread cutting and forming taps product line that encompasses three performance levels, allowing manufacturers to cost-effectively match the right tap to their particular ...

Before the late 18th century, machine parts were made by hand, and no two were alike. For instance, a bolt was manufactured on a treadle-powered lathe by a workman holding a cutting instrument and ...