Joined Jan 2020
421 Posts | 136+
ACT, Australia
I had this happen a couple of months ago. Get an M6 helicoil kit with the drill and tap.
The thread pitch 1 vs 1.25 and taking up with Loctite has me list. Thread pitch is the distance between threads so it would bins before you get enough threads in no matter which way you go.
You do need to drill and tap further than the length of the coil. Getting them out if you don't drill deep enough is difficult unless you can find the ridiculously simple tool that makes it really easy, but difficult to find. Trying to tighten the coil deeper will cause it to close up resulting in a bind and not enough depth for the bolt. The whole job is quicker than reading this thread.....
The thread pitch 1 vs 1.25 and taking up with Loctite has me list. Thread pitch is the distance between threads so it would bins before you get enough threads in no matter which way you go.
You do need to drill and tap further than the length of the coil. Getting them out if you don't drill deep enough is difficult unless you can find the ridiculously simple tool that makes it really easy, but difficult to find. Trying to tighten the coil deeper will cause it to close up resulting in a bind and not enough depth for the bolt. The whole job is quicker than reading this thread.....