Types And Standards Of Rivet Nuts

Rivet nuts come in a variety of shapes and sizes, with common options including flat heads, countersunk heads, and small countersunk heads. Flat-head rivet nuts have either a smooth or vertically grooved cylindrical portion. The vertically grooved type is often chosen for its anti-slip properties. During the riveting process, the head may protrude slightly from the sheet metal, but this design makes flat-head rivet nuts one of the most common and secure connection methods. Their national standard is GB/17880.1. Countersunk rivet nuts, also available in either a smooth or vertically grooved finish, are designed to fit into thin sheet metal with chamfers, ensuring the head sits flush with the surface after installation. These nuts can be made of galvanized iron, 304 stainless steel, or 316 stainless steel. Their national standard is GB/T17880.2. Small countersunk rivet nuts have a smaller head than countersunk rivet nuts, making them particularly suitable for thin sheet metal or applications without chamfers. They come in two types, flat and small, and can be installed in hexagonal base holes. Their hexagonal shape effectively prevents slippage and withstands greater torque. Even if the threads are damaged, hexagonal rivet nuts can securely rivet to thin panels. Their national standard is GB/T17880.5.