Originally Posted by
jhodgski
Hiya Karl,
No, I think it's threaded on both sides. The part on the drive side has a couple of flat sides, and I'm pretty sure it is for tightening.
Cheers,
Jim
I am not sure what kind of BB you have, but there is a chance that the flats on the chain-side are to just install/remove that side of the BB, while the all adjustment might happen at the other, non-chain end.