UV glue will not work for fixing brass thread inserts of laptops, I tried. failed big time. As it was mentioned correctly it does not stick well to plastic, and you can not get uv thru non transparent parts.
I used jb weld epoxy, it worked better but still did not hold up overtime. If the post where that brass insert was mounted broke apart, almost nothing you can do as far as glue, exsept soda and crazy glue, but you will need to figure a way how to contain it, basically you need to do what concrete workers do when they pour a column, build a mold around it. make sure you plug the threaded hole with something so soda and glue will not get there, do not put screw in there it will be impossible to remove, you will destroy the part you just fixed trying to unscrew it. I used playdoh