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Recess shapes naming how a fastener is turned.
Also known as: Phillips head, Torx drive, Pozidriv
A screw's drive recess names its type: slot, cross-head, hexagonal socket, star. Phillips cross-heads are designed to cam out under high torque, which was a feature for early powered assembly and is a nuisance in hand work — which is why other cross patterns exist that look similar and do not.
Name the shape of a fastener's drive recess, determining which tool turns it.
Contexts: Packaging, Technical drawing
Include patterns designed to cam out deliberately at a set torque, which is why a Phillips driver slips where a similar-looking Pozidriv does not.
Contexts: Packaging, Technical drawing
Are not interchangeable despite similar appearance, so using a Phillips driver in a Pozidriv recess damages both.
Contexts: Packaging, Technical drawing
A recess cut into a screw head as a single slot, a cross, a six-pointed star or a hexagonal socket.