Well, bear in mind I am not in any way an expert,, so it's very much down to suck it and see. I can't advise conventional epoxy as I know from experience that they start to become soft above 80C and will eventually fail. I've worked in places where it was a regular maintenance job to split things, clean them up and reapply.
What you can get are the toughened 2 part acrylics, with different cure times. They have a major advantage over epoxy, as they go to 150C happily and are less fussy about surface cleanliness when applying.
If you're going to use a high strength adhesive as a retainer between threaded components, I don't know how much grip you'll get fron the small surface area you have, and if you want to dismantle it and it hasn't failed, you can treat it as stuck for ever.
Do you have pictures of the parts and how you want to do it?
Lud