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.

Few things disturb us more than the bewilderment of a broken bolt or seized pipe plug in a casting. You're at a loss for how to get the darned thing out. This is when you have to slow down and come up ...

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 ...

If you want to make serious assemblies out of 3D printed parts, you’ll eventually need to deal with threading. The easiest way is to make a nut trap that you can either insert a standard nut into ...

I ran into a problem while doing a top-end rebuild of the stock 350 Chevy small-block in my 1974 El Camino. I discovered while trying to reinstall a new factory-style balancer bolt and -inch-thick ...

Threaded and nonthreaded conventional plastic fasteners have the same dimensional thread class and fit standards as those for metal fasteners. Sizes range from 00 to in. in diameter and in lengths up ...

Few things disturb us more than the bewilderment of a broken bolt or seized pipe plug in a casting. You’re at a loss for how to get the darned thing out. This is when you have to slow down and come up ...