A Phillips screw is a type of fastener characterized by a cross-shaped slot on its head, designed to accommodate a Phillips screwdriver. This design allows for better grip and torque compared to traditional flat-head screws, making it easier to drive into materials without slipping. Invented in the 1930s by Henry F. Phillips, the Phillips screw became popular in various industries due to its efficiency and ease of use. It is commonly found in household items, electronics, and automotive applications, providing a secure fastening solution that can be easily removed and replaced.