Originally Posted by
Hoffa626
so i found the answer on my own. How the F#$K do 23 people read this post under the "MECHANIC" CATEGORY" and no one has an answer to such an intermediate question?>!?!?! Thanks so much Bikeforum. hilarious. good bye.
The answer is 1.375x24tpi is identical to 1.37x24tpi, it's just a round off difference in nomenclature.
Sorry to disappoint you but possibly the 23 people who read the OP didn't know the correct answer and didn't want to guess. Freewheels aren't that common anymore so their threading isn't nearly as well known as it used to be.