Thread: Bottom bracket threading, explain it to me.
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Old 06-21-25 | 09:24 PM
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Originally Posted by Duragrouch
For both the cups and the shell? I know of engineering applications where one part had slightly (IIRC, 5%) different thread pitch in order to be self-locking.
It isn't self locking. It is, as stated, English thread with a metric width cup.
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