The time and costs saving technology of blind riveting is simple. The materials to be riveted only have to be reached from one side, which explains the term "blind" riveting.
The rivet is made of two parts namely, the body and the mandrel. The body is deformed when the rivet is set and it is this part which clamps the materials together.
The function of the mandrel is to deform the body of the rivet. The mandrel is therefore always stronger than the body. The mandrel breaks off at its specific breaking point. This breaking point ensures that the mandrel breaks off at the right moment so that the body is correctly deformed, and the materials are clamped together in a correct way.