i always thought it was 4.5mm, although I have no recollection where I heard that from.
You heard it from Sheldon Brown (R.I.P.)
It's so obviously wrong that the failure of whoever is maintaining the site to correct it must surely be some kind of tribute to Sheldon's famous wind-ups.
@gbj_tester started
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You heard it from Sheldon Brown (R.I.P.)
It's so obviously wrong that the failure of whoever is maintaining the site to correct it must surely be some kind of tribute to Sheldon's famous wind-ups.