Originally Posted by
Plainsman
Have run into a small issue. I can only get a 20mm bolt in about half way, and it becomes impossible to turn by hand. Same if I just use the cage bolt. As soon as I use a hex key to overcome that slight friction it binds and both the bolt and the Revnut start to turn. Not sure why the bolt will only hand thread in half way (speaking of the cage bolt here). I found blue thread locker in many of the other bolt holes. Wonder if it is gummed up in there?
Something was wrong already, which is why it rotated when you tried to get the first bolt out. So if you want to still fix this rivnut, you'll need to clean up the threads with a tap.
If you have a dremel cutting disc but no tap, you can cut a slot the long way in a spare bolt and that will act like a tap. Otherwise, take the
NVFlinch advice.