Staking is the process which you force a corner of one metal over another. Usually you can take a punch and knock down a piece of the outside metal ontop of the inside metal. We use to stake a nut to the bolt thread w/punch. This is before loc-tite or lock nuts.

popcorn The Truth is Out There (49 not trying to correct you just trying to make it simple. Ok I know clear as mud. LOL ) Ben