Blind Rivet Breaks Off:
Why Your Blind Rivets Break Off and What You Can Do About It
Published on May 22, 2026
Blind Rivets Break Off: What to Do?
The search query “Blind rivets break off” is one of the most common phrases used when users encounter problems with a riveted joint.
In reality, however, a distinction must be made: A blind rivet itself does not usually just break off. Rather, the joint often fails—the rivet shears off, tears out of the component, or the component itself breaks (fails). Understanding the causes allows you to avoid mistakes and create a durable, load-bearing joint.
Blind rivets are used daily, especially in trades, assembly, and industrial production. That’s why it’s important to understand why a blind rivet supposedly “breaks off” and which technical factors play a role in this.
Why blind rivets rarely actually break off
When users say a blind rivet breaks off, they often mean different problems. In many cases, the joint no longer holds, even though the blind rivet itself was set correctly. The cause may be that unsuitable material was used, the load was too high, or the rivet is not suitable for the application.
A modern blind rivet consists of a rivet body and a mandrel. During installation, the tool tightens the mandrel, causing the blind rivet to deform on the blind side and create a secure joint. Only then does the mandrel separate in a controlled manner at the designated predetermined breaking point. This process is technically intended and does not mean that the blind rivet has been damaged.
What defects can occur with blind rivets?
There are various reasons why a joint might fail or why it may appear as though the blind rivet has broken off. The most common problems include:
- The material to be joined is too thin or too brittle.
- The hole was drilled incorrectly.
- The blind rivet was set too close to the edge.
- Tensile or shear strengths exceed the load-bearing capacity.
- The blind rivet is the wrong length.
- The tool is not functioning properly.
- Corrosion is compromising the joint.
The correct selection is crucial, especially for thin or very brittle materials. If a blind rivet with a setting head that is too small is used, the force is not distributed adequately. This can cause the joint to fail prematurely.
Causes of a blind rivet failing to hold
1. Incorrect selection of blind rivets and material
A common cause of problems lies in the combination of blind rivets and material. Different materials react differently to stress, temperature, and corrosion. Extreme temperatures also affect the properties of many materials. Some aluminum alloys lose strength at high temperatures. At low temperatures, however, they often exhibit very good properties. Therefore, the material should always be selected to suit the intended application.
If the technical load is underestimated, it may later appear as though the blind rivets have broken off. In reality, however, the joint was not properly designed from the start.
2. Excessive shear and tensile strength
Every blind rivet has defined load limits. If these are exceeded, the joint can shear off or be torn out. Such problems occur particularly in automotive engineering, metal fabrication, and manufacturing when subjected to dynamic loads.
The following factors are critical:
- Thickness and type of material
- Diameter of the blind rivet
- Size of the setting head
- Length of the blind rivet
- Tensile strength present
- Shear strength present
If the dimensions are selected incorrectly, it may appear as though the blind rivet has broken off, even though the entire joint was actually overloaded.
3. Installation errors
Installation errors are also among the typical problems. If the blind rivet is not set properly, stresses develop within the joint. A misaligned hole or an unsuitable tool can prevent the blind rivet from being fully deformed.
The correct hole size is particularly important. If the hole is too large, the blind rivet will not be secure enough. If it is too small, the material being joined may be damaged. As a result, the joint will not hold up over time.
Sometimes an unsuitable tool is used or not maintained regularly. Wear and tear prevents the mandrel from being pulled through cleanly. This leads to additional problems during installation.
Important questions:
What role does the mandrel play?
The mandrel is a central component of any blind rivet technology. During the setting process, the tool pulls the mandrel through the rivet body. This builds up the necessary clamping force.
If the mandrel is damaged or incorrectly designed, the joint may become unstable. Equally important is the question of whether the mandrel remains inside the blind rivets or is secured. This plays a particularly important role in safety-critical applications.
What can a blind rivet withstand?
The load-bearing capacity of a blind rivet depends on several factors. The diameter, material, grip range, and material properties are crucial. In addition, temperature, corrosion, and dynamic loads affect its service life.
Blind rivets for light sheet metal work have different properties than blind rivets for industrial production or automotive manufacturing. Therefore, each joint should be designed individually.
In industrial production in particular, load values are calculated precisely. This helps prevent problems even before assembly
How do you remove blind rivets?
Removing blind rivets is another common question in workshops and production facilities. In most cases, the blind rivet is drilled out.
A suitable tool should be used for this. The drill bit must be precisely matched to the diameter of the blind rivet. If the procedure is not followed correctly, the surrounding material can be damaged.
When removing the rivet, care should also be taken to ensure that the mandrel is completely removed. Any residue can interfere with the next joint.
You can find detailed instructions here:
Removing Blind Rivets Made Easy – A Guide
Additional Factors for a Stable Joint
In addition to blind rivets, mandrels, and tools, other aspects influence the quality of the joint:
- Component thickness
- Hole size
- Edge distances
- Corrosion
- Temperature exposure
- Surface finish
- Material selection
If any of these factors are misjudged, problems will arise in the long term. The design should be carefully reviewed, especially when dealing with thin material or varying loads.
Solution for a Stable and Durable Joint
To prevent a riveted joint from failing, it is essential to ensure proper design right from the planning stage. Key factors include selecting the appropriate blind rivets, the material properties, and a suitable tool.
For users who want to set blind rivets securely, the article “Setting Blind Rivets in 3 Easy Steps” offers helpful guidance.
Especially in industrial production, it is also advisable to involve experienced specialists early on. This helps reduce problems, quality defects, and unnecessary costs.
GESIPA offers further information on industrial solutions and professional consulting here:
Conclusion
When users search for “blind rivets break off,” the damaged blind rivet or faulty joint is usually just the symptom. These problems are often caused by unsuitable material, incorrect sizing, excessive loads, or an unsuitable tool.
Anyone who wants to select and install blind rivets correctly should pay attention to the right material, the correct design, the hole size, and the load ratings. This ensures a safe and durable joint—both in trade applications and in industrial production.
