3.2mm x 4mm Black Blind Rivets ALU/STEEL Dome Head Pop Rivets – Aluminium Body Steel Mandrel

Blind Rivets Aluminium Body / Steel Mandrel with Black Head

Blind rivets are a simple mechanical fastening system composed of an aluminium sleeve and a break stem steel mandrel. They are inserted from one side of the joint and, when set with a rivet gun, the mandrel pulls through the sleeve to form a tight, permanent clamp even when there is no access to the reverse side. This makes them ideal for joining two or more components made from the same or dissimilar materials.

These rivets feature a flange head, which provides a broader bearing surface than a standard dome head. The expanded flange spreads the load across a wider area, making them particularly suitable for thin or soft materials and for covering oversize holes. The aluminium body keeps the rivet lightweight and corrosion resistant, while the steel mandrel supplies the strength needed to pull the sleeve tight. A Black paint finish ensures the rivet blends aesthetically with light coloured panels or cladding and offers extra corrosion protection.

Key Features & Benefits

• One sided installation: Set from one side only, making them perfect for locations where the rear of the joint is inaccessible.
• Permanent joint: The mandrel snaps off cleanly after installation, leaving a vibration-resistant, tamper-proof connection.
• Expanded flange head: Twice the under-head bearing area of standard rivets; ideal for thin sheet or brittle materials.
• Black finish: Colour-matched head provides a neat appearance and additional corrosion resistance.
• Versatile fastening: Suitable for metals, plastics and composites in construction, automotive, HVAC, furniture and general fabrication.

These Black blind rivets offer a strong, unobtrusive solution for fastening thin materials to a rigid base and provide reliable performance where only one side of the joint is accessible.