The Ultimate Guide to Blind Rivet Nuts

The Ultimate Guide to Blind Rivet Nuts

Types, Materials, Installation & Industrial Applications

Blind rivet nuts, also known as threaded inserts or nutserts, are among the most versatile fastening solutions in modern manufacturing. They provide strong internal threads in thin-sheet materials where traditional tapping or welding is impractical.

These fasteners are widely used across industries such as automotive manufacturing, electric-vehicle battery systems, industrial machinery, electronic enclosures, and aerospace structures.

This comprehensive guide explains everything engineers and manufacturers need to know about blind rivet nuts, including types, materials, installation methods, and industry applications.

 1. What Are Blind Rivet Nuts?

Blind rivet nuts are internally threaded fasteners designed to be installed into thin materials from one side of the workpiece.

Unlike traditional nuts and bolts that require access to both sides of a component, blind rivet nuts allow manufacturers to create durable threaded connections even in closed sections or hollow structures.

After installation, the rivet nut forms a strong mechanical lock by expanding on the backside of the material.

Key Characteristics

• One-side installation

• Internal machine threads

• Suitable for thin sheet materials

• Strong pull-out and torque resistance

• Compatible with automated assembly systems

Because of these advantages, blind rivet nuts are commonly used when:

• Materials are too thin to tap threads

• Welding would damage coatings or heat-sensitive materials

• Access to the backside of the component is limited

2. How Blind Rivet Nuts Work

The installation process of a blind rivet nut is relatively simple but highly effective.

A specialized rivet nut tool pulls the threaded mandrel of the rivet nut while pushing against the flange. This action causes the unthreaded portion of the rivet nut body to collapse and expand against the backside of the parent material.

The result is a permanent threaded insert firmly secured inside the panel.

Basic Installation Steps

1. Drill a hole in the base material

2. Insert the blind rivet nut into the hole

3. Use a rivet nut tool to collapse the shank

4. The body expands and clamps onto the material

5. Remove the tool, leaving a ready-to-use threaded connection

This process is fast and repeatable, making blind rivet nuts ideal for high-volume industrial production.

 3. Common Types of Blind Rivet Nuts

Different applications require different rivet nut designs. The most commonly used types include:

Standard Round Body Rivet Nuts

Round body rivet nuts are the most widely used type. They are suitable for general-purpose applications in sheet metal assemblies.

They provide reliable threaded connections in materials such as:

• Aluminum sheet

• Mild steel

• Stainless steel panels

 Hex Body Rivet Nuts

Hex body rivet nuts are designed to prevent rotation during installation and service.

They are commonly used in applications requiring high torque resistance, such as automotive structural assemblies.

 Knurled Body Rivet Nuts

Knurled rivet nuts feature serrated or textured surfaces that improve grip in soft materials.

These are commonly used in:

• Plastic housings

• Composite materials

• Lightweight structures

 Slotted (Petal) Rivet Nuts

Slotted rivet nuts expand into multiple segments during installation, forming a large clamping area on the backside of the material.

These are ideal for:

• Thin sheet metal

• Plastic components

• Hollow profiles

The expanded “petal” design significantly improves pull-out resistance.

 Sealed Rivet Nuts

Sealed rivet nuts include a built-in sealing element that prevents fluids or air from passing through the fastening point.

These fasteners are commonly used in applications requiring environmental protection, such as:

• Electric vehicle battery housings

• Automotive electronics

• Waterproof equipment enclosures

Sealed rivet nuts can help manufacturers achieve IP67 sealing performance in critical assemblies.

4. Rivet Nut Materials

Selecting the correct rivet nut material is essential for achieving optimal strength, durability, and corrosion resistance.

The most common materials include:

Carbon Steel Rivet Nuts

Carbon steel rivet nuts are widely used due to their high strength and cost efficiency.

They are typically finished with protective coatings such as:

• Zinc plating

• Zinc-nickel coating

• Black oxide

These coatings improve corrosion resistance in industrial environments.

Aluminum Rivet Nuts

Aluminum rivet nuts are ideal for lightweight structures where minimizing weight is important.

Advantages include:

• Low weight

• Good corrosion resistance

• Easy installation

They are commonly used in electronics, transportation equipment, and lightweight structures.

 Stainless Steel Rivet Nuts

Stainless steel rivet nuts provide excellent corrosion resistance and durability in harsh environments.

Typical stainless grades include:

• 304 stainless steel

• 316 stainless steel

These are commonly used in industries such as:

• Marine equipment

• Food processing machinery

• Automotive components

• Outdoor equipment

 5. Understanding Grip Range

Grip range refers to the thickness range of the base material that a rivet nut can securely clamp.

Selecting the correct grip range is critical to ensuring proper installation and long-term fastening performance.

Selection Guidelines

1. Measure the thickness of the parent material.

2. Select a rivet nut whose grip range covers that thickness.

3. If two options are available, the shorter grip version      is often recommended for improved installation reliability.

Improper grip range selection can lead to:

• Loose fasteners

• Reduced pull-out strength

• Installation defects

 6. Installation Tools for Rivet Nuts

Blind rivet nuts can be installed using several types of tools depending on production volume.

Manual Rivet Nut Tools

Hand-operated tools are suitable for low-volume production and maintenance work.

Advantages include:

• Low cost

• Portable operation

• Simple setup

 Pneumatic Rivet Nut Tools

Pneumatic tools are commonly used in industrial production lines.

They offer:

• Faster installation speed

• Consistent installation force

• Improved productivity

Battery-Powered Rivet Nut Tools

Modern cordless rivet nut tools provide the flexibility of portable operation with a strong installation force.

They are ideal for assembly lines and field installations.

 7. Industrial Applications of Blind Rivet Nuts

Blind rivet nuts are used in a wide range of industries due to their flexibility and strength.

Automotive Industry

In automotive manufacturing, rivet nuts are used for:

• Interior panels

• Structural brackets

• Body panels

• Seat mounting systems

They provide reliable threaded connections in thin automotive sheet metal.

 Electric Vehicle Battery Systems

In electric vehicles, rivet nuts are widely used in:

• Battery pack housings

• Battery module frames

• Cooling plate assemblies

• Structural mounting points

These components often use thin aluminum battery enclosures, making rivet nuts an ideal fastening solution.

Sealed rivet nuts are frequently used to help achieve high environmental protection levels required for battery safety.

Electrical Equipment Manufacturing

Electrical equipment manufacturers use rivet nuts to create durable threaded connections in:

• Control cabinets

• Electrical enclosures

• Industrial panels

They allow for easy installation of components such as switches, brackets, and mounting plates.

 Aerospace and Transportation

In aerospace and rail transportation systems, rivet nuts provide strong fastening points in lightweight structural materials.

Their ability to install from one side makes them ideal for closed structures and tubular assemblies.

8. Advantages of Using Blind Rivet Nuts

Blind rivet nuts offer several important advantages over traditional fastening methods.

Fast Installation

Installation is quick and requires minimal preparation.

 One-Side Access

They can be installed when only one side of the workpiece is accessible.

 Strong Threaded Connections

They provide reliable machine threads even in thin materials.

 Compatibility with Automated Production

Rivet nuts can be installed using automated equipment in high-volume production environments.

 9. Choosing the Right Rivet Nut for Your Application

When selecting a rivet nut, engineers should consider several factors:

• Material of the base component

• Required load strength

• Corrosion resistance

• Environmental exposure

• Grip range compatibility

• Installation method

Working with an experienced fastening supplier ensures the correct rivet nut design is selected for each application.

 10. Reliable Rivet Nut Solutions from Juxin Fasteners

With over 20+ years of experience in industrial fastening technology, Juxin Fasteners provides high-quality solutions for global manufacturers.

Our product range includes:

• Blind rivet nuts

• Hex rivet nuts

• Knurled rivet nuts

• Sealed rivet nuts

• Structural rivet nuts

These fastening solutions are widely used in industries such as automotive manufacturing, electric vehicles, electrical equipment, and industrial machinery.

By combining advanced manufacturing processes with strict quality control, we deliver fastening solutions that meet the demanding standards of modern engineering.