Dharani Projects

A self-tapping screw is a screw that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended to produce a thread in relatively soft material or sheet materials, excluding wood screws. Other specific types of self-tapping screw include self-drilling screws and thread rolling screws.

Self-drilling screws are designed to drill their own pilot holes and tap threads in one operation, eliminating the need for pre-drilling. They are commonly used in metal applications like roofing, cladding, and steel framing, as well as in some wood and plastic applications. These screws are characterized by a drill-shaped point and are available in various sizes, lengths, and head types, including hex, wafer, and pan heads. 

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