Rivet Nuts For Metal

Rivet nuts for metal has good adaptability to different base material thicknesses. Taking the M6 ​​stainless steel nut as an example, after being installed on a one-millimeter-thick aluminum plate, its ultimate tensile bearing capacity can reach 4.2,000 N. When the plate thickness increases to 3 mm, the value increases to 7.9,000 N. Both are based on the standard tensile fixture test results, which fully illustrates that the expansion deformation of the nut can automatically adjust the anchoring depth according to the plate thickness, forming a locking force that matches the thickness of the base material. The aperture tolerance of the mounting hole has a significant impact on the molding quality. When the aperture is controlled within the recommended range of plus or minus 0.05 mm, the height difference between the nut head and the plate surface after riveting can be maintained within 0.1 mm, and the expansion of the thread pitch diameter does not exceed 0.02 mm, ensuring that the smoothness of subsequent bolt screw-in meets the requirements of the ISO 6H-level internal thread tolerance zone. This accuracy data provides a reliable basis for setting process parameters of the automated assembly line.

Under dynamic impact load scenarios, the blind rivet nut showed excellent resistance to instantaneous overload. According to the ISO 179 metal material impact test method, a drop weight impact was applied to an M10 nut installed on a two-millimeter-thick structural steel plate. When the impact energy absorbed reached 75 joules, the nut body and the base material around the mounting hole did not show signs of cracking or detachment, proving that it can effectively withstand the instantaneous impact force caused by the start and stop of equipment or accidental collisions. For applications that require frequent disassembly and maintenance, after five hundred complete screwing-in and unscrewing cycles, a thread pass-and-stop gauge is used to detect. The pass gauge can pass but the stop gauge stops, indicating that the thread accuracy is maintained well. At the same time, the attenuation rate of the torsional performance of the head of the blind rivet nut is less than 5%. This is due to the permanent locking effect formed by the anti-rotation tooth design of the tail embedded in the base material when first installed. In addition, the inside of the nut can be pre-coated with microcapsule oil-resistant sealant, which can last for 300,000 times without leakage in the 1.6 MPa hydraulic pulse test. It is suitable for reliable fixing of hydraulic valve blocks or pneumatic components on metal frames.

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