Countersunk self-tapping screws are crafted from carbon steel or stainless steel, featuring a tapered countersunk head that sits flush with the workpiece surface after installation, creating a smooth, unobtrusive finish. This design is ideal for applications requiring a flat appearance, such as furniture manufacturing, electrical device assembly, and construction decoration, where surface smoothness and minimal protrusion are essential. Equipped with cross or slotted heads, they are compatible with manual tools and electric screwdrivers, eliminating the need for pre-drilling—their self-tapping threads directly cut or press into materials like metal, wood, and plastic to form secure internal threads, enabling fast and efficient fastening.
Carbon steel variants, treated with galvanization or Dacromet for rust resistance, offer high strength at a cost-effective price, suitable for general indoor and outdoor applications like panel connections. Stainless steel types (e.g., 304, 316), renowned for excellent corrosion resistance, perform reliably in harsh environments such as humidity or acid-base conditions, making them perfect for outdoor installations, kitchen/bathroom equipment, and other demanding scenarios. Available in thread sizes ranging from M2 to M10 and lengths from 6mm to 100mm, they accommodate various plate thicknesses. Widely used in concealed furniture panel connections, drywall fixing, and precision instrument assembly, these screws adhere to the GB/T 5280 national standard, ensuring consistent quality and providing efficient, aesthetic fastening solutions for diverse industries.
