Rivet nuts—also known as blind rivet nuts or threaded inserts—provide strong, reusable internal threads in materials that are too thin or too weak to support traditional tapped holes. Installed from one side of the workpiece, rivet nuts allow machine screws and bolts to be used securely in sheet metal, tubing, extrusions, and composite panels. Their durability, versatility, and ease of installation make them a staple in automotive, aerospace, electronics, construction, and general manufacturing.
Understanding Rivet Nuts
A rivet nut is a tubular, internally threaded fastener designed to anchor itself on the blind side of a material. During installation, the rivet nut is inserted into a pre-drilled hole and deformed from behind using a dedicated rivet nut tool. This expansion clamps the material between the head and the upset portion of the rivet nut, leaving behind a strong, permanent threaded insert.
For alternative threaded fastening options, see:
Threaded Inserts Rivets
Types of Rivet Nuts
Flat Head Rivet Nuts
Provide a broad bearing surface and sit against the material surface for maximum pull-through resistance.
Countersunk Head Rivet Nuts
Designed to sit flush with the workpiece, ideal for applications requiring a smooth, finished appearance.
Hexagonal Body Rivet Nuts
The hex-shaped body prevents spinning during installation or under torque, providing improved mechanical performance.
Materials and Coatings
Rivet nuts are available in steel, stainless steel, aluminum, and brass to match performance and environmental requirements. Various coatings—including zinc, zinc-nickel, and nickel plating—further enhance corrosion resistance, conductivity, or aesthetic finish.
See also:
Material Rivets
Applications of Rivet Nuts
Automotive
Used in body panels, chassis components, brackets, and interior assemblies where blind-threaded fastening is necessary.
Construction
Ideal for metal roofing, HVAC assemblies, structural supports, and architectural systems.
Electronics
Provide internal threads in enclosures, devices, and mounts where backside access is restricted.
Furniture & Consumer Goods
Used to add secure threaded attachment points in metal frames, composite structures, and cabinetry.
Advantages of Rivet Nuts
One-Sided Installation
Installed from the accessible side only, making them ideal for enclosed or hard-to-reach assemblies.
Durable, Vibration-Resistant Threads
Provide strong internal threading in thin materials without risk of stripping.
Versatile Design Options
Available in multiple head styles, body configurations, and materials to meet varied application needs.
Simple Installation
Do not require special access or skilled operators—standard hand or pneumatic rivet nut tools are often sufficient.
Installation Process
Drill or Punch the Hole
Prepare a hole matching the rivet nut’s diameter specification.
Insert the Rivet Nut
Place the rivet nut into the hole with the flange seated squarely against the material surface.
Expand the Rivet Nut
Use a rivet nut tool to pull the mandrel, expanding the backside of the rivet nut and locking it into place.
Remove the Tool
Once fully set, remove the tool, leaving a secure, reusable threaded insert ready for a bolt or machine screw.
For installation equipment, visit:
Rivet Guns
Conclusion
Rivet nuts provide a powerful fastening solution by delivering durable, reusable threads in thin or blind applications where traditional nuts and bolts cannot be used. Their versatility, ease of installation, and compatibility with a wide range of materials make them indispensable in modern manufacturing, maintenance, and assembly. From lightweight structures to complex mechanical systems, rivet nuts ensure long-lasting, dependable fastening performance.
