Roy wrote........The easy way to figure the size is by subtracting 1/TPI
from the nominal thread diameter.........
?
As I mentioned in my post, this is only accurate
for 60 deg threads. For those of us on this side of the pond, it doesn't work.
But it can be used as an approximation, where the 'fit' is not too
important.
Cheers.
???????
Ellis
