How much LESS than the major diameter, of the required thread, should work be turned to before threading:
With a die?
Single pointing?
For example a 3/8 NC bolt is always approx .367 not .375 and when one tries to cut the threads with a die, .375 is too large for the die. No charts I have seen specify this, so I usually just turn the shaft a few thou under.
With a die?
Single pointing?
For example a 3/8 NC bolt is always approx .367 not .375 and when one tries to cut the threads with a die, .375 is too large for the die. No charts I have seen specify this, so I usually just turn the shaft a few thou under.