100mm Black Drywall Screws Coarse Thread (500/Box)

100mm Black Drywall Screws for heavy-duty applications requiring exceptional penetration through multiple board layers. Each screw is manufactured from hardened carbon steel with a black phosphate coating that provides light corrosion resistance and a clean, low-glare finish. The bugle head ensures a smooth, flush seating without tearing the board’s paper surface, achieving a professional, ready-to-fill finish. A sharp W-type gimlet point allows easy penetration and rapid engagement into timber, reducing driving effort. The coarse thread is optimised for wood substrates, delivering strong bite and resistance to pull-out in natural grain. 100mm heavy-duty long fixings for deep board assemblies and heavy timber frameworks.