Tolerance needed for major diameter of 2 11/16 -12 threads

[Mech5656]

Hello Engineers,

Can you help me find min and max tolerance for major diameter of 2 11/16 -12 threads? It’s not a standard thread size. I couldn’t find it online.

 

[drawoh]

3DDave,

I have that LP too. I wonder how the CD works.

--
JHG

 

[Mech5656]

SwinnyGG:

I agree with you. On my print, I did specify tighter tolerance (+0/-0.002) which was mainly because of the time constraint. I had to make a decision within a day (notice the dates above).

Yes, It was a one time thing and it is lesson learned. Thanks again!

 

[Mech5656]

Thanks to all who replied. I learned how to calculate tolerance of major diameter of unified threads. What an amazing platform this is for learning. The threaded nuts were machined and installed on shaft. It is used to lock impeller in place.