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.

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 ...

Thor International Company are specialists in fastening solutions, with more than 25 years of experience in screw thread insert systems. We are the main authorised distributor of the Helicoil screw ...