Dry Wall Screws Coarse Thread Black Phosphate #8x1 (4.2x25mm), made in Taiwan, are high-quality fasteners designed for secure fixing in drywall and wood applications. Manufactured from durable steel with a black phosphate coating, they offer good corrosion resistance and smooth driving performance. The coarse thread provides strong holding power, while the sharp point ensures easy penetration without pre-drilling. Supplied in a pack of 900 pieces, these screws are ideal for professional and interior construction use where reliability and consistent performance are essential.