Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Schrader valves all have the same thread -- worldwide. What you see is the identical dimensions expressed in both imperial and metric, but they're the same.
Externally threaded adapters, usually have the identical thread, but may not be made to the same tolerance. I suggest you take whatever needs to fit with you when you buy an adapter and confirm the fit.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance