Articles 

Blind Riveting

2011-02-23

A blind rivet that is properly set in the recommended hole size at maximum grip range, will set with a good mandrel head retention. Mandrel head retention is the term given to the locking of the mandrel head in the blind rivet body after the mandrel has set the blind rivet. The mandrel has a crimp just below the mandrel head. This crimp is a reduction of the diameter of the shank of the mandrel, thus creating a weak point in the shank of the mandrel and it is at this crimp that the mandrel will break when the pulling force of the blind rivet setting tool is greater than the tensile strength of the crimp point of the mandrel. It is the length of the blind rivet body that extends beyond the work piece that upsets and captures the head of the mandrel.