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 ...

Self-tapping screws are designed to create their own threads as they are driven into masonry. Unlike other fasteners, contractors do need to drill a hole or tap threads in a separate step. This ...

One of the greatest advantages of designing plastic parts is the vast number of assembly options a designer can apply to his or her design. The most common among these options is the use of screws.

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...