I saw listing which was described as a "sunked screw head"-- which I know as meant for a countersunk hole that tapers.
Here is a copy of the photo where I can see a gap at the underside of the pan head. Is this a typo in the description or is this an actual head type?
The listing is on Aliexpress with no proper specification. I don't think I'll have much luck trying to ask the seller which is why I'm asking here.