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Advantages of Using a Rivet Nut

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Advantages of Using a Rivet Nut

Apr 11,2022

Rivet nuts (also known as rivnuts or threaded inserts) offer productivity gains over traditional bolt and weld nut applications. With high shear and tensile strength, these fasteners install easily into thin wall materials.
They’re installed by using a special rivet nut tool. This tool uses hydropneumatic pressure to set the nut while a mandrel is inserted into the back of the rivet nut.
Weight Reduction
In addition to their high shear and tensile strengths, rivet nuts can offer a lower weight alternative for applications that require an extremely low profile fastener. They’re also less likely to torque out than screw-and-nut systems, self-tapping screws or pressed inserts because they don’t depend on heat to remain seated.
They’re also easier to install than weld nuts that require welding equipment, or nut-and-bolt systems that are difficult to put together. Plus, rivet nut installation is faster and more practical than other methods because the process doesn’t involve any heat, and you can use hydro-pneumatic tools that enable you to quickly and easily set multiple fasteners at once.
Load-Bearing
A rivet nut creates strong load-bearing threaded connections in thin sheet materials, or "skins," that are too thin for a tapped thread. This strength helps reduce product weight and increase strength.
They also help prevent spin-out, which can occur when the threads of a fastener pull out of a hole or base material. This can lead to rework and additional cost for the user. To reduce this risk, manufacturers can test their joint in a tensile machine, sandwiching the fastener head between the mating part and parent or base panel. This enables them to see if the fastener can resist a tensile load and provides peace of mind that the parts will hold up in service.
Rivet nuts come in two basic groups: standard and heavy-duty. Both offer benefits over other fastener types such as weld nuts and self-tapping screws, which may deform the parent material or damage surface finishes. They are also less likely to torque out and can be installed without the need for countersinking or dimpling.
Faster Assembly
A major benefit of the rivet nut over nuts, bolts and weld nuts is that they are faster to install. This is primarily because there is no need for welds which require additional time to complete. Additionally, they are less likely to torque out than other types of fasteners, particularly if a specialty rivet nut tool is used.
Rivet nuts can be installed “blind” from one side of the material and are ideal for use in box, tube and extrusion applications. The rivnut body is inserted into the hole and then crimped using the mandrel on the installation tool until it grips the back side of the material.
Some rivet nuts come with ribbed flanges and others have a knurled body. They can also be supplied with a reduced countersunk head to reduce the profile of the flange and enable them to be used in pre-painted or post-painted applications without damage to the surface. This feature allows for even faster assembly as well as improved resistance to corrosion.
Durability
Unlike alternative fasteners that require the use of heat to fuse multiple parts together, rivet nuts create a solid load-bearing connection without the added risk. However, they do require that users carefully inspect the area after installation to make sure that any drilled holes are flush with other materials.
Another benefit of using a rivet nut is that it can be removed or re-installed with no risk of structural integrity loss. Rivet nuts have high shear and tensile strength, making them ideal for heavy-duty industrial applications.
Rivet nut inserts are available in several different head and body styles to suit specific applications. The flat head style is the most common in use, but countersunk or reduced heads are also available. These options allow the rivet nut to be installed with a hex bolt without protruding too much from the surface of the workpiece. This can be helpful for achieving a sleek and modern look in many workpieces.

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