BS AU 50.3.2a:2002 pdf free.Tyres and wheels-Part 3.2:Valves-Tyre valve threads. BS AU 50.3.2a The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate...