From Newsgroup: rec.bicycles.tech

Yep, standards are wonderful. So, we ought to have a lot of
them!

https://soshanger.ca/en/home/3926-thread-star-rear-12mm-axle-thread-identifier.html

and those are only the 12mm formats. There are more...
--
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971

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