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@BringMeMyFix
Some stats:
Type Thread Equivalent
I.S.O. 1.375" x 24 tpi 34.92 x 1.048 mm
British 1.370" x 24 tpi 34.80 x 1.058 mm
French 34.7 x 1 mm 1.366" x 25.4 tpi
Italian 35 mm x 24 tpi 1.378" x 1.058 mm
Having said that, I've swapped between EAI, On-One, and Tranzmission (cheapoid) sprockets on my System-Ex hub without problems (but I'm careful not to go mental tightening it up with a chainwhip in the first place).