Headlamp bowl adjuster screw...sockets?

[Fingolfin]

Not sure what to call them. The three (or two, on non-Mog ones) threaded brass things that sit in hexagonal holes in the headlamp bowl rim.

My problem is, one of the brass things (would they be called nuts?) was sheared in half on one of Mog's bowls. In repairing the bowls, I replaced this brass thing with one from a spare bowl, but I can't get the hex flange to flatten (that is, the narrow part that is exposed through the front side of the rim) and so the brass thing is basically loose. Has anyone got any suggestions for how to get it to sit firmly?

[Tom and Maria]

I used a few sockets carefully placed either side and a vice to squash it down. I also araldited it just to be sure the brass didn't bend back, but I don't really think that is needed.

Tom