Products
Clinching Nuts, commonly known as self-clinching nuts or press nuts, are revolutionary fasteners designed to provide strong, permanent internal threads in thin sheet metal materials that are otherwise too thin to be tapped. At Donghuang, we manufacture these fasteners specifically for the electronics, telecommunications, and aerospace industries, where space is limited and weight must be minimized. When pressed into a pre-drilled or punched hole, the clinching nut causes the surrounding metal to cold-flow into a specially designed annular clinch groove, creating a high-strength, torque-resistant permanent bond that will not loosen or fall out.
The success of a self-clinching nut depends on the precision of its pilot and the geometry of its serrated clinching ring. Donghuang clinching nuts are engineered to be harder than the sheet metal they are installed into (typically aluminum, cold-rolled steel, or thin stainless steel). This hardness difference is essential for the clinching process to occur correctly. Our nuts feature a sharp serrated ring that prevents the nut from rotating once installed, providing exceptional torque-out resistance. We utilize advanced CNC machining and cold-forming to ensure that every nut has consistent dimensions, which is critical for the success of automated press-insertion equipment used in high-volume electronics assembly.
Donghuang provides clinching nuts in various materials to match the substrate and prevent galvanic corrosion. For aluminum sheets, we offer aluminum and stainless steel clinching nuts. For steel enclosures, our carbon steel nuts with zinc or nickel plating provide excellent conductivity and durability. We also offer specialized "flush" clinching nuts that sit completely level with the sheet metal surface, allowing for the stacking of components without interference. Our "miniature" series is designed for the high-density PCB and smartphone markets, providing reliable threading in materials as thin as 0.5mm. Each fastener is finished to precise tolerances to ensure smooth thread engagement with mating screws.
At Donghuang, we pride ourselves on being a technical partner to the high-tech sector. We understand that in an electronic enclosure, the failure of a single press nut can lead to the loss of expensive components. Our quality control system includes rigorous "push-out" and "torque-out" testing to ensure our clinching nuts meet the highest industry standards. We provide detailed installation guides, including recommended hole sizes and installation forces for different material types and thicknesses. By choosing Donghuang clinching nuts, you are ensuring that your sheet metal assemblies are equipped with the most reliable, efficient, and permanent threading solution available in the modern hardware market.
