Originally Posted by Berodesign
I wonder if it is a bad idea to use loctite on a italian threaded bottom bracket, fixed side, so it wont unscrew itself during use. Is there any risk of damaging the bottom bracket or the shell by doing this?
A small amount of thread lock wouldn't hurt in my view. Shimano bottom bracket cups come from the factory with a small amount of thread lock already applied so you won't need any if you are installing a new Shimano BB? Just use the low strength stuff and don't use too much if you're going to try it. Also, thread lock will not work if the threads are oily so keep this in mind.
Good luck.
Ed