Yes you are correct. We have been through this before. 1/2-24 is a UNS (special) thread not a UNEX thread. That makes it even harder to find. Sorry!reible wrote:I'm using a thread gauge and it is what it is. 28 is not even close and 24 fits like a glove and not an OJ glove. I can take a picture if you want but these thread gauges don't don't fib.
Ed
jsburger wrote:Hmmm... The thread chart I am looking at is...reible wrote:I was just out looking at the threads with a thread gauge. The 1/2-24 is correct so you were right the first time. The 5/8" arbor is 18tpi which is standard, well that and 11tpi.
So that is the story and the more I think about his pulley solution I'm going to drop that to 6 out of 10. I just checked pulley prices on amazon and they are still cheap....
Ed
UNC 1/2-13 UNF 1/2-20 UNEF 1/2-28
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OJ's fit like a 1/2-28.