A self-tapping screw is a type of screw that can tap its own hole as it is driven into the material. It is designed to create mating threads in wood, plastic, or metal without requiring pre-tapped threads.

Yes, in most cases, self-tapping screws require a pre-drilled pilot hole. The size of the pilot hole is crucial and should be slightly smaller than the outer diameter of the screw threads to allow the screw to grip effectively.

Self-tapping screws form threads but usually require a pilot hole to be drilled first. Self-drilling screws have a tip shaped like a drill bit, allowing them to drill their own pilot hole and tap their own threads in a single process.

Absolutely. Hardened steel or stainless steel self-tapping screws are commonly used to fasten metal sheets, aluminum frames, and light-gauge steel constructions effectively.

Stainless steel self-tapping screws offer superior corrosion and rust resistance, making them ideal for outdoor installations, marine environments, and applications exposed to moisture.