Term for deliberate deformation of threads?

Yes, we used the term staking when you deform a thread to the bolt so the nut can't back off. And the term peening was when you deform the end of the bolt threads so the nut can't fall off or pass through. Depends what the application requires.
 
interference thread if the nut or bolt is machined or designed that way,
staking, if manually applied
 
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