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.

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 ...

This article was updated May 25, 2023. It was originally published Nov. 17, 2009. To put hard, durable threaded holes in plastics, engineers often specify threaded metal inserts that will securely ...