The first thing to understand is what is a Flat head rivet nut, and what is the difference between it and a general nut? The rivet nut is also called a self-tightening nut. It is a kind of nut applied to sheet metal or thin plate. Generally speaking, the hole diameter of the preset hole is slightly smaller than the embossing teeth of the rivet nut. As the name, the flower teeth of the riveting nut are squeezed into the plate by pressure to cause plastic deformation of the periphery of the hole, and the deformed object is squeezed. into the guide groove to produce a locking effect.

The selection of the material of the stainless steel cage nut is mainly considered from five aspects. First, the mechanical properties of the pressure riveting nut material, especially the strength requirements; Second, the working conditions require the corrosion resistance of the material; three . The requirements of the working temperature on the heat resistance of the material (high temperature strength, anti-oxidation performance); 4. The requirements of the production process on the processing performance of the material; 5. Other aspects, such as weight, price, and procurement factors must be considered ; After considering these five aspects comprehensively, comprehensively and comprehensively, determine the grade, variety, specification and material standard of the pressure rivet nut.

The commonly used grades of stainless steel cage nuts are 302, 303, 304, and 305, which are the so-called 18-8 stainless steel grades. Both corrosion resistance and mechanical properties are similar. The starting point of selection is the production process method of the pressure riveting nut, and the method depends on the size and shape of the pressure riveting nut, and also depends on the quantity of production.

Type 302 is used for machined screws and self-tapping bolts.

Type 303 In order to improve the cutting performance, a small amount of sulfur is added to the type 303 stainless steel, which is used for machining rivet nuts from bar stock.