Originally Posted by Bikeguy Joe
I'm thinking you haven't examined the threads on the nuts very closely... The stock studs can be "o.k." but a lot of the nuts are absolute junk.
Never really inspected them but haven't had trouble. Guess I've just been lucky. However having gone through a bag or two of McMaster Carr 6mm nuts found a couple that, when viewed from the side, looked like they been hitting the bottle.