Originally Posted by Trakhak
ISO (International Standards Organization) is not Italian threading. For track cogs and freewheels, there is no difference between ISO and British threading. From Sheldon's site:
Most ISO standards are compatible with British standards.
Good catch and sorry about the misinformation. I was thinking of the dimensions of square taper bottom brackets where ISO is the same as Campy (i.e. Italian) and the alternate standard is JIS.