Product Description
4mm Aluminium/Steel Large-Flange Blind Rivets
These 4mm open-end blind rivets feature an aluminium body and zinc-plated steel break mandrel. Their enlarged 12mm dome-head flange distributes the clamping load over a wider surface than a standard blind-rivet head.
The increased bearing area makes these rivets particularly useful for joining thin sheet, panels, plastics and softer materials where a standard-size head could pull through or distort the surface.
Product Details
- Rivet diameter: 4mm
- Available lengths: 10mm, 12mm and 16mm
- Rivet body material: Aluminium
- Mandrel material: Zinc-plated steel
- Rivet type: Open-end blind rivet
- Mandrel type: Break pull
- Head type: Large-flange dome head
- Flange diameter: 12mm
- Recommended hole diameter: 4.1mm
- Legacy design standard: DIN 7337-C large-head pattern
The grip range is the combined thickness of the materials being joined. Choose a rivet whose stated grip range covers the complete assembly thickness. The available options do not provide continuous coverage between every listed grip range.
Rivet length is measured from beneath the large-flange head to the end of the rivet body. Dimensions are provided as a guide and should be checked before ordering where they are critical.
Features and Benefits
- Can be installed where access is available from only one side
- Large 12mm flange spreads the clamping load over a wider surface
- Helps reduce pull-through and surface distortion in thin or softer materials
- Lightweight aluminium rivet body
- Zinc-plated steel mandrel provides reliable installation
- Suitable for quick permanent assembly using a blind-rivet tool
- Available in packs of 5, 10, 20, 50, 100, 250, 500 and 1,000 rivets
Typical Applications
- Thin sheet-metal assemblies
- Plastic panels and lightweight components
- Automotive trim and bodywork
- Signs, enclosures and access panels
- General fabrication, maintenance and repair work
Installation Guidance
Drill a clean 4.1mm hole and remove any burrs or swarf. Insert the rivet through the assembled materials and set it using a blind-rivet tool fitted with the appropriate 4mm nosepiece.
Ensure the materials are held firmly together before pulling the mandrel. Consider material compatibility and possible galvanic corrosion when aluminium rivets are installed into dissimilar metals in damp or corrosive environments.
Browse our complete range of blind and pop rivets.

| A | B | C | D | E | F |
| 4.0mm | 10mm | 12mm | 4mm | 6mm | 4.1mm |
| 4.0mm | 16mm | 12mm | 10mm | 12mm | 4.1mm |
| 4.0mm | 12mm | 12mm | 6.5mm | 8.5mm | 4.1mm |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.