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.

When people are designing lightweight products, or repairing a worn-out thread, a dependable fastening tool can make a big difference. This is where self tapping threaded inserts can come into play.

Inserts are classified as two general types: those held in place by external threads and those that use some means other than threads (knurls, grooves, interference fit) for their holding power.

Engineers at General Dynamics Land Systems, Sterling Heights, Mich., faced a challenge when designing the Expeditionary Fighting Vehicle for the U. S. Marine Corps. The amphibious combat craft needed ...

We’ve all had this happen at some point while tightening hardware: It feels like it’s snugging up nicely, and then it suddenly seems to tun too easily. Or maybe you were removing stubborn hardware and ...