Up until recently, it seems I’ve only encountered a handful (flat, Phillips, Torx) of screw head types. Turns out there’s a crapload more.
Recently ran into several sporting square holes which I now believe are “decking” screws. But they were used all over the basement to hang up shelves and even a few phone jacks.
I can understand different types of screws needed for different materials, but this whole screw head thing is frankly nutty.
I’ll never complain about USB / Firewire / Thunderbolt again…