High-performance blind rivet particularly for structural attachment

Blind rivet of the type comprised of a hollow sleeve receiving a mandrel comprising:

• at a first end, a head coming to act on the sleeve,
• at a second end, a shank to which clutches a tool in order to imprint upon it a traction load,
• a breaking groove which breaks off when the traction load reaches a certain value,
• CHARACTERIZED BY THE FACT THAT
• the geometry of the breaking groove is defined in such a way that the connection between the groove bottom and the external diameter of the mandrel is more progressive on the shank side than on the head side,
• the shank is preformed with a plurality of crimping grooves and is dimensioned in such a way that once the shank broken off on the breaking groove, a portion of the crimping grooves extend beyond the sleeve,
• the shank is preformed from an embrittlement groove,
• it comprises an added crimping ring that is urged to crimp on the crimping grooves extending beyond the sleeve by means of a tool provided with an inserting nose providing the traction on the mandrel for the purposes of deformation of the sleeve and of crimping of the ring on the mandrel.