What would you consider the best way (from a practical point of view - manufacturing environment) to inspect the perpendicularity or runout of the faces of a nut to the thread's axis?
Usually, tolerancing is supposed to reproduce the use of the part. how to reproduce the conical effect of the thread without tightening the nut? how to check the face once tighten?
I feel like it's a case of theorically correct drawing that is near impossible to check. Maybe by screwing this on a shaft that is very slighly bigger that the nominal thread diameter and check for runout?
I find that sometime rethinking the design is better. if perpendicularity with the surface an issue, why not use a softer material washer for example? I am not saying it's the right solution but sometime trying to fit a square in a round hole is not a good sign.