PINCHED NUTS QUESTION

I have front strut rod nut that threads right on. Could I just give that nut a squeeze in the vice to distort it a bit at the trailing edge?
I don't see why not. Any method to keep the nut from backing off......upset the threads on the rod after the nut gets installed.....tack weld the nut onto the shaft.....distort the nut a bit, etc.