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Schrader valves
They are an old design…
The standard Schrader valve has the following thread:
External Thread
METRIC: 7.7 mm OD, thread root diameter is 6.9mm x 0.794 mm pitch.
IMPERIAL: 0.305" OD, thread root diameter 0.302" x 32 tpi (threads per inch)
Internal Thread (the valve core)
METRIC: 5.30mm OD x 0.706mm pitch
IMPERIAL: 0.209" OD x 36 tpi.