Premium Material: The Phillips screws are made of carbon steel and are corrosion-resistant, strong and durable, not easy to deform, not easy to rust. Sharp Threads: The thread is sharp and deep, the slope is uniform, and the lines are clear. The force is applied evenly during use to ensure good attraction force. Head Design: The Phillips screws can keep the surface flat. On the top there is a standard cross slot that is not easy to slip. Smooth surface: The cross countersunk head screw is carefully forged, the surface is well finished, smooth and burr-free, and the use is safer. Wide application: Widely used in home and office appliances, all kinds of machinery and apparatus, auto parts communication equipment, ship assembly and other machinery. Note: The data are all manually measured, please allow an error of 1-3 cm. Due to differences in light and display, there may be color differences, please refer to the actual item received.