Md Hd Rivet 250Pk Silver Flange Type Alum Mandrel

The Md Hd Rivet 250Pk Silver Flange Type Alum Mandrel from Allstar Performance is an essential fastening solution for fabricators, restoration shops, and serious enthusiasts tackling custom bodywork, chassis assembly, or structural repairs. These mandrel rivets are designed for applications where welding or threading is not feasible, providing a reliable fastening method for various projects.

Mandrel rivets operate by drawing a shaped aluminum mandrel through the rivet body as you pull the rivet gun trigger, creating a controlled head expansion that locks metal-to-metal without heat distortion. The silver aluminum construction resists corrosion better than steel and remains ductile under vibration, making them suitable for engine bay, suspension, or fuel system applications where movement and temperature cycling could affect fasteners.

Technicians favor these rivets for joining aluminum body panels, fiberglass composite work, and multi-layer assemblies common in tube-frame race cars and kit cars. The flanged design distributes pressure across a wider surface area, reducing the risk of pull-through on softer materials and providing superior clamping force per rivet compared to standard dome-head alternatives.