What is the difference between self-tapping, self-drilling, and piercing screws when working with various materials? A HelloNation article provides the answer by explaining how each screw type ...

Self-tapping screws are usually drilled into pre-made holes (pilot holes) in metals, such as zinc, aluminum, and bronze and its alloys, as well as plastics and resin-impregnated plywood. They create ...

The basic tapping screws are classified as thread forming and thread cutting. Thread-forming tapping screws displace the material adjacent to the pilot hole so it flows around the screw threads.

Twist drills do not make accurately sized or good finish holes; a reamer of some type is often used to cut the final size and finish. A reamer will not make the original hole; it will only enlarge a ...

What's the right type of screw to use for metal, wood, or plastic? A HelloNation article helps answer that question by ...