General description Timco Plasterboard Screws Coarse Thread (Black) - 3.5 x 55mm are designed specifically for securing sheets of plasterboard to timber studs. These screws feature a fully threaded design with a bugle head and a sharp point for easy installation. Technical specifications Dimensions: 3.5 x 55 mm Thread Type: Coarse Thread Head Type: Bugle Head Point Type: 25° Sharp Point Finish: Black Phosphate Quantity: 500 screws per box Usage Ideal for securing plasterboard to timber studs. The bugle head design prevents tearing of the outer paper layer of the gypsum board. The sharp point allows for precise starting in the plasterboard. Other information Includes a free PH2 driver bit for easy installation.