HOW THEY WORK!
A Blind Rivet consists of two parts: the rivet body and, within it, the setting mandrel.
1. The Blind Rivet body is inserted in a hole in the materials to be joined.
2. The Blind Rivet tool is placed over the mandrel. The tool is actuated and the jaws of the tool grip the mandrel.
3. The jaws retract, extracting the mandrel which pulls the mandrel head into the rivet body setting the rivet. At a predetermined tensile load, the mandrel breaks from its head and is discarded.
This forms a strong, tight, reliable joint. Because this is all done from one side these are called BLIND rivets.