Rivet nuts can be categorized by head shape into flat head, round head, and countersunk head types, with countersunk heads including 90° and 120° small countersunk heads. They are also classified by threaded hole design into through-hole rivet nuts and blind-hole rivet nuts; blind-hole nuts provide a sealing and waterproof function. Anti-rotation structures include hexagonal rivet nuts (such as full hexagon, half hexagon, and internal/external hexagonal), smooth cylindrical rivet nuts, and knurled rivet nuts; the hexagonal structure effectively prevents rotation.
Common materials include carbon steel (often galvanized), stainless steel (such as 304 and 316), aluminum alloy, and copper. Functionally, they are categorized into standard, waterproof (such as blind-hole glued type), anti-loosening (with anti-slip teeth), and high-load-bearing (such as perforated rivet nuts).