These 4.2x75mm drywall screws are designed for securely fastening plasterboard to metal studs, providing a reliable and durable solution for larger drywall installations. With a fine thread, they offer excellent grip and smooth penetration into metal, ensuring a secure and stable hold. The Phosphate (Phos) coating enhances their corrosion resistance, making them suitable for use in dry to moderately humid environments. Supplied in a box of 200 screws, they are perfect for both professional contractors and DIY enthusiasts working on medium to large-scale projects.The fine thread design allows for easy, damage-free installation, providing a firm connection that prevents sagging or loosening of plasterboard over time. These screws are ideal for creating strong, long-lasting bonds between plasterboard and metal studs, ensuring a solid and secure installation. With the added protection of the Phos coating against rust and wear, these drywall screws offer dependable performance and durability, making them a cost-effective choice for drywall and plasterboard applications.