Anyone know the thread sized of a schrader and presta valve? A quick google and a look on Sheldon Brown didn't throw up the answers
Tyre valve thread sized
How quick a Google ?
Metric: 7.7 mm OD, thread root diameter is 6.9 mm × 0.794 mm pitch.
Imperial: 0.305 in OD, thread root diameter 0.271 in × 32 tpi (threads per inch)
Internal thread (to accept the threaded valve core)
Metric: 5.30 mm OD × 0.706 mm pitch
Imperial: 0.209 in OD × 36 tpi.
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