Blue-white hexagonal self-drilling screws are high-performance integrated fasteners that combine three core functions: drilling, tapping, and fastening, making them a pivotal component in modern construction, manufacturing, and renovation projects.
In terms of surface treatment, these screws adopt a professional blue-white zinc plating process. This plating layer not only forms a dense protective film on the screw surface but also undergoes strict adhesion and corrosion resistance tests—effectively withstanding the erosion of harsh environments such as high humidity, rainwater, and mild chemical vapors. Compared with ordinary unplated or single-zinc-plated screws, their service life in outdoor or humid scenarios can be extended by 2 to 3 times, avoiding frequent maintenance and replacement caused by rust.
Structurally, their hexagonal head design features a standardized edge angle, which ensures stable clamping with common tools such as hexagonal wrenches or electric screwdrivers, preventing slippage during high-torque operation. The most distinctive part is the self-drilling tip: it is precision-machined with a spiral cutting edge and a pointed guide structure, allowing the screw to quickly penetrate and drill holes in materials like carbon steel, aluminum plates, and color steel plates (with thicknesses generally within 3-8mm) without the need for pre-drilling or pre-tapping. This design directly eliminates the cumbersome multi-step process of “measuring → marking → drilling → selecting matching screws” required by traditional fasteners.
During actual application, operators only need to match the screw with a suitable electric tool, align it with the installation position, and start the tool to complete drilling, tapping, and fastening in one continuous operation. Statistics show that for the same number of connection points (e.g., 20 fixed points on a color steel roof), using blue-white hexagonal self-drilling screws can reduce installation time by 60% compared to traditional screws, while also ensuring uniform fastening force and reducing the risk of loosening caused by improper pre-drilling.
Currently, these screws are widely used in steel structure roofing installation, modular furniture assembly, outdoor billboard fixing, electrical cabinet manufacturing, and light steel keel connection—becoming a preferred fastener for professionals in construction, furniture, and hardware industries due to their efficiency, durability, and ease of use.
Post time: Sep-09-2025