Factory spec for cutting the nut slots?

My method is to fret a string across both the first and second frets, use feeler gauges to measure the height of the frets, add a couple of

Stack enough together to reach the height of the frets, then another couple of thousandths, put them up against the nut, and file to the gauges

nut slot height If the string is touching the first fret, chances are the slot is tool low Confirmation of this is the string will buzz unfretted but not when

nuts and bolts slot Not sure of a measurement, I just bring down the slot height just to where the intonation on the first fret is good That usually leaves