Hood,
0 for radial cutting so will start with 29.5 for flank cutting.
BTW, not trying to be a purist on the measurements, info given is a whole lot better than the nut is loose or tight and for most folks they coudn't even measure the angle of the cut accurately. So I'm happy what is being cut. Will try 15, 30, 45 ( just for kicks ) on flank cutting to see how the threads look for comparison. Will a write up on threading ( good grief don't want to do treatise on it) but thoughts are for the
newbie.
RICH