General description Used to secure plasterboard to timber stud work, these TIMco collated drywall screws feature a coarse thread and are designed for efficiency and ease of use. Technical specifications Size: 3.5 x 38mm Colour/Plating: Black Phosphate Recess Type: Phillips Head Head Type: Bugle Pack Type: Box Pack Quantity: 1000 Thread Type: Partially threaded Compatibility and accessories Compatible with all leading power tool brands