25362:
Thanks for your info and it does help me to understand acme screw thread.
But still, what does acme stand for? my guess was Association of Cxxx Mechanic Engineering, an organization who set up the ACME standard? Maybe I am wrong.
Or put it another way, who set the ACME standards...
Bonswa:
How about both? Just try to understand the meaning of ACME. it seems to me a association standard, but I couldn't find details.
Thanks for your reply.