Originally Posted by
desconhecido
I've not seen every GB stem, but don't recall ever having seen one with a wedge rather than a cyclindrical expansion nut. Here are a couple (Raleigh used them on a lot of bikes). Two different styles. The bog standard was on a Super Course, the one labeled "forged" on a late 70s Grand Prix.
Interesting. Maybe I've never actually had that GB stem out to see the bottom, or forgot that it was different. Probably people would call it 'quill' as a catchall. Wouldn't be the first time cycling terminology got messed up due to history (I'm looking at you "clipless"!). cyco brings up another good example. A 'threaded' stem is not threaded, but the headset that goes around the steerer tube that the stem is inserted into, is.