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 ...

Impulse heat staking simplifies installation of brass inserts by generating heat only when needed and keeping the cycle consistent from part to part. Real-time depth verification adds straightforward ...

September 20, 2010 Add as a preferred source on Google Add as a preferred source on Google Matching a replacement screw or bolt can be a headache given the number of sizes and threading pitches you ...

The evolution of custom self-tapping screws traces back to the early 20th century, emerging as a revolutionary solution to eliminate the need for pre-drilling and tapping in separate stages. Over the ...

Shoulder screws, also known as shoulder bolts and stripper bolts, are machine screws with an integral shoulder or journal between the head and thread. Although they are not readily available in local ...

Roy Underhill shows how to use an 1889 foot-driven metal working lathe. Make your own darn metal screws with this 1889 foot-powered lathe! Roy shows how to cut perfect threads, cones and tapers in ...

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, ...