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Intro: When a Phillips Is Not a Phillips! Cross-head, Cross-Point, Cruciform, Square Drive Screws and Drivers These screw types have a + shaped recess on the head and are driven by a cross-head screwdriver, designed originally ... Step 1: Early Screws.
Phillips and posidrive screws are two types of crosshead screws, different from each other in that the Phillips screw head has four cross points and the posidrive screw head has a star with eight points. The third kind of screw is the socket or hex screw.