Blind rivets GESIPA Polygrip 4.8x15 Al/A2 large flange (for 4.5–11.0 mm) Pack of 250

GESIPA Polygrip blind rivets 4.8x15 Al/A2 large flange are single-sided fastening elements with an aluminium body and an A2 (stainless steel) mandrel. Supplied in a pack of 250, these rivets are engineered for blind riveting applications where access is available only from one side. The large flange head increases bearing surface to reduce pull-through in softer substrates, while the specified grip range of 4.5–11.0 mm covers a variety of panel and sheet thickness combinations commonly encountered in metalworking and assembly tasks.

Advantages

These blind rivets combine a lightweight aluminium sleeve with a corrosion-resistant stainless steel mandrel to provide durable, permanent joints in environments where galvanic compatibility and resistance to rust matter. The large flange distributes load across a wider area, improving fastening strength in thin or soft materials such as plastics and thin-gauge sheet metal. Supplied in a bulk pack of 250, they are convenient for production and maintenance jobs that require a steady supply of identical fasteners.

Suitable for

• Sheet metal assemblies and panels
• Plastic housings and composite parts
• Single-sided installation where back access is restricted
• Maintenance, repair and production runs requiring consistent blind rivets

Key specifications

• Rivet diameter: 4.8 mm
• Mandrel material: A2 stainless steel
• Body material: Aluminium
• Head type: Large flange
• Rivet length: 15 mm
• Grip range: 4.5–11.0 mm
• Pack quantity: 250 pieces

How to use

Select a rivet whose grip range matches the combined thickness of the materials to be joined. Drill or prepare a hole of the correct diameter, insert the rivet through the parts so the large flange sits flush against the exterior surface, and position the mandrel in the nosepiece of an appropriate blind rivet tool. Apply steady compression until the mandrel snaps, forming a blind head and compressing the sleeve to create a permanent joint. Remove the broken mandrel stub and verify that the flange bears evenly against the workpiece.

Usage recommendations

Use correct drill diameter and a rivet tool suitable for 4.8 mm rivets to ensure consistent setting and full mandrel break-off. For dissimilar metals, check for potential galvanic corrosion and consider surface treatments or isolation where necessary. Store rivets in a dry place to preserve sleeve and mandrel condition.