Originally Posted by lawkd
No, Dirtdrop is talking about the ring with *teeth* which is just below the notched ring. The ring with 3 notches IS threaded, with no setscrew, and the ring below that has those accordion-shaped teeth which engage the top of the bearing cup race--and THAT ring is NOT threaded, so it lifts straight up, and then the cup race spins off. I have this exact headset on a 1982 Univega Sportour.
Well then in that case he's right that is not threaded, my apologies...I didn't think we were concerned with that part.