Originally Posted by bobotech

So yesterday I got a grade 8 bolt in 9/16ths size with matching grade 8 nut and 3 lock washers and put it into the adjustable cup. Put my half inch socket with short extension into the BB shell and then tightened it down. Used a big ole breaker bar and it ended up breaking the cup free and I was able to save the bike. Never came across one so stuck as that one but all is well now.