Nut face runout / perpendicularity to thread - inspection strategies

[M.B.]

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?

 

[supergee]

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.

gee