We have all done it, overtightened a bolt and blown out the threads. When a bolt starts to tighten up and then go suddenly loose, you know that the threads are toast and now you have a problem.

Threaded fasteners are a necessity for almost any mechanical device. When making changes to a machine, one can add threads by tapping the part itself, or by using a nut. A nut can even be welded to a ...

New thread mills and insert mills from Emuge Corp. (www.emuge.com) are designed to solve problems of leaking pipe joints in the petroleum and natural gas industries associated with traditional machine ...