Self-Pierce Riveting (SPR) is a cold joining process used to fasten two or more sheets of material by driving a rivet through the top sheet(s) and upsetting the rivet, under the influence of a die, into the lower sheet without piercing it.

Speed and quiet operation are features of each system. Typical riveting cycle time ranges from 1.0 to 4 seconds.

SPR has a number of advantages over other joining techniques, such as welding and blind riveting:

Joins a range of dissimilar materials such as: Steel/Aluminium/Plastics

Joins multiple material stacks

Non-thermal process - can be used after coating or painting with virtually  

No aesthetic or other damage

Low energy demands

Fast cycle times

Operator and environment friendly; no heat, fumes, sparks or waste

Repeatable quality

Visually checkable joint

Automatic rivet feed allows continuous production.