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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.
Most of these screws are self-tapping in. that they only require a pre-drilled hole (pre-drill sizes), but some come with self-drilling. (shown in above pic) or self-tapping tips. Here's a large list of different types of tips, the. more common ones appear to be A, AB (pointed) and B (no point). Here's a good guide. to the different point types and uses. See more pics of thread cutting screws here. Even. more good pictures of different head types.