Your response really surprises me. There may still be pockets of folks that work that way but by and and large the most I’d expect to see now out of the big aerospace manufacturers is a Monte Carlo simulation of the tolerance stack with a assumed normal distribution centered around nominal. Very unlikely to account for all the tolerance possibilities or even skewed distribution. Even that would be unusually detailed amount of engineering that you might only see on something as critical as the jack screw you worked on.