i'm after them self tapping type screws that are black, and have a bit more of a point on them

i'm sure you know which ones i mean, they've got a different sort of cross slot as well at the top, they are tighter than normal wood screws

are they plasterboard screws?

need to go and get 1 or 2 tomorrow to replace a few that i've "lost" when i 've been taking things apart so need to get the right ones so they'll look right

but can't remember what they'd be called and google is being a twat about showing pictures