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I was just on the Park Tool page earlier looking at the specs on my French bottom bracket.  The Italian specs are there too:


"The Italian Standard uses a threading of 36 mm x 24 threads per inch. Both sides of the bottom bracket are right hand threaded. Parts in the Italian standard are usually marked as such. Not all Italian-made bikes use Italian Standard threading.  Frames in this standard can be distinguished by a 35 mm inside diameter."

https://www.parktool.com/en-us/blog/repair-help/bottom-bracket-standards-and-terminology


Just saw a new sealed Italian BB at Velo Orange, $30.  Don't know if this will help, but it's out there anyways:

https://velo-orange.com/collections/bottom-brackets/products/italian-thread-bb


Or you could use one of these repair BBs.  These are supposed to fit most BB shells and don't use the threads.

[ATTACH=full]286439[/ATTACH]

https://www.yst-corp.com.tw/products-view-bb-993.php


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