Sprocket Nut

[limax2]

Do you know if the threads in the upgraded nut are larger than the threads in the original nut (ie so they engage deeper with the threads on the shaft), or is the only difference the extra 3mm width of the nut?.
Thanks.

I think the thread in the nut is the same size on diameter but with greater length of engagement.
Here is a drawing that I did long ago, (and has cropped up on this and other sites since), which shows the difference.


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