Drywall Screws with a sharp, notched head that can easily penetrate the steel framing, as well as fine threads that are designed to pass through the steel, also used for plasterboard.

Material to be C1022 Steel, finished screws to be further heated/hardend.

Surface treatment: black, grey phosphated, zinc or yellow zinc plated.

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Drywall Screws coarse or fine threads, please see below difference.

Images (fine threads drywall screws)