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square thread forms data

square thread forms data

square thread forms data

(OP)
hello - i have been told to use square threads on a new design - i know that square threads are harder to manufacture & have been replaced by acme threads but i have to use them - the part i need to thread is approx. 6" in dia. - i cannot find any tables of data for square threads & what i have found only goes up to 4" dia. - also the pitch of the thread seems very large for any large dia. - any help or data for designing these threads would be very appreciated - thank you
i have also posted this in the machines forum too
 

RE: square thread forms data

Square thread is not standardized, so you make up your own numbers and dimension every single element on your drawing.

Normally, the greater radial gap is provided and axial gap is kept to the minimum.

There is also empirical rule to keep pitch about 0.25 of ID, but it is not chiseled in stone.

So good luck!

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