Optimal fastening for soft materials

This spread rivet, also known as umbrella or triform rivet, is specially designed for securely joining soft or thin materials such as plastic, thin steel sheets, wood, and plasterboard. When installed, the rivet spreads behind the material into three equal ribs, providing a large contact surface and an even distribution of clamping force.

Specifications

• Diameter: 4.0 mm
• Length: 21 mm
• Clamping range: 5.0 - 9.0 mm
• Sleeve material: Aluminium AlMg 3 / 3.5 (5154)
• Mandrel material: Aluminium AlMg 5 (5056)
• Head shape: Flat head
• Shear strength: 500 N
• Tensile strength: 800 N
• Pre-drill diameter: 4.2 mm (max. 4.4 mm)

Applications in the automotive sector

In the automotive sector, this spread rivet is ideal for various applications, such as attaching license plates, repairing window mechanisms, and mounting mud flaps. Thanks to the large closing head, the clamping force is distributed evenly, preventing the rivet from being pulled through the material.

Easy installation

Installing this spread rivet is simple and quick. During the riveting process, the mandrel falls out of the hollow rivet, after which the rivet sleeve splits into three parts on the closing head side. This results in a large contact surface with the material to be fastened, ensuring a strong and reliable connection.

Advantages of aluminium construction

• Corrosion resistance: The all-aluminium construction offers excellent resistance to corrosion, extending the lifespan of the connection.
• Lightweight: Aluminium is lightweight, helping to reduce the overall weight of the construction without compromising strength.
• Vibration resistant: The non-removable mandrel head ensures a vibration-resistant connection, which is essential in applications where vibrations occur.

Packaging

These spread rivets are supplied in a pack of 20 pieces, suitable for both professional use and DIY projects.

Summary

With the triform spread rivet aluminium 4.0x21mm, you have a high-quality fastening solution specially designed for safe and efficient joining of soft and thin materials. The unique spreading function ensures a strong and reliable connection, while the aluminium construction guarantees durability and corrosion resistance.