Drywall Screws Fine Thread Self Drilling Point 3.5mm x 42mm Pack of 500 Our Self Drilling Point drywall Screws are made from carbon steel and finished with a black phosphate coating to ensure long lasting performance when securing dyrwall boards to timber stud work. The Self Drilling point allows the screws to easily secure the boards whilst maintaining the board structure and avoiding any tears to the paper. The screws come with a Phillips cross making it easy to use and install with cordless and main operated machines. Features: UnCollated Phillips Cross drive type Round, bugle head Countersunk Fine/Self-Drilling point thread style Carbon Steel Black Phosphate finish Ensure correct PPE is used when operating cordless and mains-operated machines.