Unlike wood screws, construction screws are designed specifically for sheet metal, plastic, and composite materials like particle board and plywood. They lack ridges along their shank, so they can easily slide through a pre-drilled hole without snagging on any nearby material. They also have much narrower threads than wood screws, which allows them to penetrate more quickly and results in less grip on whatever material they’re screwed into. As such, they are better used when anchoring something light in weight or when working with materials that don’t require much gripping force.
Construction screws are typically made from harder metals than wood screws, which makes them more durable and less likely to strip.
Construction screws are available in various lengths and widths, while wood screws are typically only available in lengths up to 3 inches.
Construction screws typically have a Phillips or Robertson head, while wood screws typically have a square or hex head.
Wood screws are typically less expensive than construction screws.
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