The nylon head self-drilling screw is a high-efficiency fastener. Its head is integrally injection-molded with high-quality nylon, and it comes with a built-in waterproof cap that can effectively prevent rainwater from seeping in. It also has both insulating properties and impact resistance.The shank is mostly made of 1022 carbon steel or 410 stainless steel, with a galvanized surface. It has strong tensile strength and remains tight even after long-term use.Its self-drilling tip is sharp, allowing it to complete three operations—drilling, tapping, and locking—without auxiliary processing, which greatly improves construction efficiency. The main specification features a thick diameter of 5.5, with optional lengths ranging from 19 to 150. The color can be customized according to the color of the color steel plate, ensuring both aesthetics and corrosion resistance.It is widely used in scenarios such as fixing color steel tiles and resin tiles, as well as ceiling installation and outdoor guardrail installation.