4.2x70mm Drywall Black Screws, Self Tapping Phillips Countersunk Head, Coarse Thread, Sharp Point, Phosphate Finish Wood Plaster Screws for Plasterboard to Installation (250 pcs)

DRYWALL SCREWS: Material - Carbon steel, Coating - Black Phosphate, Threads - Coarse thread, Tail - Sharp Pointed, Head - Bugle, Drive - Phillips PH2. USABILITY: Drywall screws designed for fastening drywall boards to wood or metal, optimized stitch point geometry and bugle head helps effectively install plasterboard and wood panels, multipurpose screw used in a variety of application, screws are fairly thin enough for them to fasten sheets of drywall to ceiling joists without damaging the materials. EASY TO INSTALL: Phillips head screwdriver needed (bit 2PH), sharp point and coarse thread screw firmly connects two surfaces and bugle head hinder them from sinking into the wood and keeps flush with the surface. PHOSPHATE COATING: The black color of carbon Steel screws is a result of phosphate coating, which is used to help prevent rusting. Without the phosphate coating, wet residues from the drywall can cause the screw heads to rust. Screws are mostly used for indoor projects. UNIVERSAL SCREW: Most people prefer to use drywall screws for their wood because of their shapes and how inexpensive they are. Carbon steel screws perfect for constructions, plasterboard, plaster walls, wood panels, stairs and other indoor applications, patios and various wood joints.