Type A point tapping screws have a sharp point and a wide, deep thread, making them ideal for thin metal sheets. It’s designed to drill into the metal without needing a pre-drilled hole, making it a convenient and efficient choice. It’s commonly used in automotive, roofing, and sheet metal work applications.

Type AB point-tapping screws have a sharper and finer point than type A point-tapping screws. It’s designed for thicker metal sheets, plastics, and other materials. The screw has a double lead thread, which allows it to cut and form lines faster than different screw types. It’s commonly used in construction for tasks such as fastening drywall to metal studs, framing, and other similar applications.

Type B point tapping screws have a broader and flatter point than the previous two types. It’s ideal for wood and soft materials, as it doesn’t require a pre-drilled hole. The screw has a coarse thread that provides excellent holding power, making it perfect for furniture, cabinetry, and other similar applications.