RCOS-CD Steel Open Rivetnut | Countersunk Round | M3-M12

Steel Open End Rivetnuts for Materials up to 7.50mm Thick

The RCOS-CD Round Countersunk Head Open End Rivetnut is designed to provide a strong, reliable threaded insert in materials up to 7.50mm thick. Manufactured from high-quality zinc-plated steel, these rivetnuts create durable, reusable metric threads without the need for welding, tapping, or access to the reverse side of the material.

Featuring a countersunk head design, these rivetnuts sit flush with the material surface when installed correctly, creating a neat, professional finish. The open end construction allows the use of longer screws and bolts where required, making them a versatile fastening solution for a wide range of engineering and manufacturing applications.

Ideal for Flush Finish Fastening Applications

RCOS-CD rivetnuts are ideal for applications where a smooth, flush surface is important. The countersunk head minimises projection above the material surface while still providing a strong, load-bearing thread in thin materials where conventional tapping is not practical.

Available Sizes

• M3
• M4 (2 Lengths)
• M5 (2 Lengths)
• M6 (2 Lengths)
• M8 (2 Lengths)
• M10 (2 Lengths)
• M12 (2 Lengths)

Key Features

• Suitable for materials up to 7.50mm thick
• Countersunk head for a flush, professional finish
• Open end design for versatile fastening applications
• Round body for standard installation applications
• Manufactured from durable steel
• Zinc Plated Cr3 finish for enhanced corrosion resistance
• RoHS compliant
• Creates strong, reusable metric threads
• Fast installation from one side of the application
• Suitable for engineering, manufacturing, and fabrication projects

Product Specifications

Code: RCOS-CD
Shape: Round
Head Style: Countersunk
Style: Open End
Material: Steel
Body Type: Metric
Finish: Zinc Plated Cr3 (RoHS Compliant)
Maximum Material Thickness: 7.50mm

Typical Applications

• Sheet metal fabrication
• Automotive assemblies
• Electrical enclosures
• HVAC systems
• Metal furniture manufacture
• Industrial machinery
• Engineering projects
• General repair and maintenance

Why Choose Round Countersunk Head Steel Open End Rivetnuts?

Round countersunk head steel open end rivetnuts are ideal where a flush finish and strong threaded fixing are required. The countersunk head sits level with the material surface, providing a clean appearance, while the open end design offers flexibility for a wide range of fastening applications. They create secure, load-bearing threads in thin materials and are widely used throughout engineering and manufacturing industries.

Product Summary

The RCOS-CD Round Countersunk Head Steel Open End Rivetnut provides a strong, reusable threaded insert for materials up to 7.50mm thick. Featuring a flush-fitting countersunk head and durable zinc-plated steel construction, these rivetnuts are ideal for engineering, fabrication, automotive, and industrial applications. Available in M3 to M12 sizes.