What is the difference between rivet nut and plus nut?

Rivet nuts and plus nuts are both types of threaded fasteners used to create a secure and threaded connection in materials where it is difficult to achieve using traditional methods. While they serve a similar purpose, there are some differences between rivet nuts and plus nuts:

Rivet Nuts (also known as threaded inserts or blind rivet nuts):

    Installation Method: Rivet nuts are installed by inserting them into a pre-drilled hole in the material. Once inserted, they are typically deformed using a specialized tool, such as a rivet nut setter or a rivet nut installation tool. The deformation creates a secure and threaded connection, providing a nut-like feature for attaching bolts, screws, or other threaded fasteners.
    Types: Rivet nuts come in various styles and configurations, including round body, hexagonal body, or countersunk head, among others, to accommodate different installation requirements and material thicknesses.
    Applications: Rivet nuts are commonly used in applications where access is limited to one side of the material. They are frequently used in sheet metal, plastic, and composite materials to create strong and reliable threaded connections, especially in situations where welding or other traditional methods are not suitable or possible.

GB17880.5 flat head hexagon rivet nuts
Thread      Coarse teeth/Standard teeth/Fine teeth/Very fine teeth
Material     Carbon steel /Alloy steel    
Standard type     National standard GB

Plus Nuts (also known as threaded inserts or flanged rivet nuts):

    Installation Method: Plus nuts are installed in a similar manner to rivet nuts, requiring a pre-drilled hole in the material. However, plus nuts have a flange or collar at the head, which provides additional support and reinforcement to the material being fastened. They are typically installed by deforming the flange using a special tool or process.
    Types: Plus nuts are available in different designs and styles, including round body or hexagonal body, and they may also have various collar configurations, such as large flange or small flange, depending on the specific application requirements.
    Applications: Plus nuts are often used in applications where a secure and load-bearing threaded connection is needed, particularly in softer or less structurally sound materials. The flange provides added strength and distributes the load over a larger area, making plus nuts suitable for applications that require higher pull-out and torque resistance.