Self Pierce Riveting (SPR) is a process used to join two or more layers of material without a predrilled or punched hole. This is done by driving a rivet through the top layers of material and upsetting the rivet in the lower layer (without piercing the layer) to form a durable joint.

Whether joining aluminum, steel, plastics, composites, or combinations of materials, SPR is ideal for joining sheet materials providing a watertight joint. SPR rivets are installed with a servo-driven tool enabling control of the rivet-setting process for uncompromised repeatability. This system provides process-monitoring capabilities, enabling increased productivity and quality.