I first noticed this on electrical components like switches, receptacles, and breakers here in the US, a few months ago. All the screws on the devices themselv

I first noticed this on electrical components like switches, receptacles, and breakers here in the US, a few months ago. All the screws on the devices themselves are flat, Phillips (maybe Pozi, didn't check) and square. I was remodeling my kitchen and adding some circuits, replacing all the devices, and pigtailing all the old Aluminum. Those multi-driver heads are pretty wonderful!