I just got back from the hardware store after dealing with a similar issue - most hinge plates that attach to the carcass won't accept 5mm screws. A few do, mainly face-frame hinge plates (doesn't make sense to me, but whatever).
I checked the different kinds of hinges I've bought as I've experimented with cabinet doors, and none of them will take a 5mm euro screw. Most take normal wood screws, some have an 8mm "dowel" that expands when you flip part of it. The screw holes are also not 32mm center-to-center. Grrr.
So, I'm afraid I have no answer for you, but can sympathize.