Wiktionary
screw drive
n. A slot in the head of a screw, of various shapes, enabling a screwdriver to lock into the screw.
Usage examples of "screw drive".
These coastal steamers got more cargo space by using the more modern screw drive, but the smaller boilers they could get by with had no more speed to offer.
Now, during his third appearance, he was closer than before, more solid than before, staring from the riverbank as Ti drifted down it with the naked maidens that always accompanied him on his raft (which had now become a full-sized cabin cruiser with both propeller screw drive and air-cushion speed equipment).