Originally Posted by
brons2
I disagree that using the headset size to define the stem size is universally used. Perhaps in bike industry internal terminology. However, I can post a dozen links if so desired that state the outside diameter for the actual stem itself.
While I agree that quill diameter is prevalent to clarify 22.2 vs 22.0 quill sizes, I'd be willing to wager a non trivial amount of money that were you to Google "1" quill stem" that 99 out of 100 results would be a stem with either a 22.0 or a 22.2 quill diameter.
At the end of the day I was just trying to help the OP clarify his search keywords so he doesn't male the same mistake twice.
Edit: oh, you ARE the OP. whatever, good luck.