The Hem-Fix Type Blind Rivet, also known as a Hem-Flange Rivet, is a type of blind rivet specifically engineered for joining thin sheets of material, particularly when one of the sheets has a hemmed or folded edge. Its unique design allows it to create a strong, secure, and flush joint without deforming or damaging the delicate hemmed edge.

How Does It Work?

Like a standard blind rivet, the Hem-Fix Type Blind Rivet consists of a rivet body (or shell) and a mandrel. When installed using a riveting tool, the mandrel is pulled through the rivet body. However, the head of the Hem-Fix rivet is designed to split into multiple sections, typically three or four, which then fold back and form a large, flush-fitting flange on the blind side of the material. This wide flange distributes the clamping force over a larger area, preventing the rivet from pulling through the thin sheet and ensuring a strong, vibration-resistant joint.

Key Features and Advantages

• Gentle on Thin Materials: The most significant advantage of the Hem-Fix Type Blind Rivet is its ability to join thin sheets without causing deformation or damage. The large flange on the blind side prevents the rivet from "punching" through or pulling out of the material.

• Ideal for Hemmed Edges: It's specifically designed for applications where one of the materials has a rolled or hemmed edge, commonly found in automotive panels, household appliances, and HVAC systems. The rivet head sits neatly against the hemmed edge, creating a clean, professional finish.

• High Shear and Tensile Strength: Despite its gentle nature, the rivet provides excellent shear and tensile strength, making it suitable for applications that require a durable and reliable connection.

• Vibration and Weather Resistance: The tight, secure joint created by the Hem-Fix rivet is highly resistant to vibration, making it a preferred choice in industries like automotive and aerospace. When used with appropriate materials, it also offers good weather resistance.

• Aesthetic Finish: Since the head of the rivet sits flush against the surface, it provides a clean and low-profile appearance.

Common Applications

The unique properties of the Hem-Fix Type Blind Rivet make it indispensable in a variety of industries and applications, including:

• Automotive: Joining door panels, hoods, and body frames where thin sheets and hemmed edges are common.

• Appliances: Assembling washing machines, refrigerators, and other household appliances.

• HVAC: Securing ductwork and ventilation systems.

• Electronics: Joining metal chassis and enclosures.

• Furniture: Assembling metal frames and panels.

Choosing the Right Hem-Fix Rivet

When selecting a Hem-Fix Type Blind Rivet, it's crucial to consider the following factors:

• Material Compatibility: The rivet material should be compatible with the materials being joined to prevent galvanic corrosion. Common materials include aluminum, steel, and stainless steel.

• Grip Range: The grip range refers to the total thickness of the materials being fastened. Choosing a rivet with the correct grip range is essential for a proper and secure installation.

• Head Style: While the flush-fitting head is a key feature, different head styles may be available for specific aesthetic or functional needs.

• Riveting Tool: Ensure you have the appropriate blind riveting tool for the specific size and material of the rivet you're using.

In summary, the Hem-Fix Type Blind Rivet is a specialized, yet crucial, fastener that offers a high-performance solution for joining thin and hemmed materials. Its unique design ensures a strong, durable, and aesthetically pleasing connection, making it a valuable tool for engineers and manufacturers in many industries.