Have you considered Nyloc/Tuflok/Torq-Patch bolts instead?
I guess you (hopefully) won't have to change the hanger that often - but they can be used again and you don't have to wait for the loctite to cure
There's many different types of loctite. I have one that works the same way as this. Maybe not exactly as good as what you are suggesting but I haven't had problems before
Fair. I guess I will have to test it. I was thinking M4 bolts and locktite would do the job.