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 new additions to the TD217 Advance through-hole tap include the DIN profiles G, BSW, UNC, UNF and UNEF, EgUNC and EgUNF ...

The strength of some internal threads is more sensitive to tap diameter than previously thought. • Cold-formed threads are no stronger than cut threads when holes are correctly sized. • Cut threads ...