Patent ID: 9291186
Filing Date: 2016-03-22
CPC Classification: F16B

Claim Text:
1. A fastening member of the type comprising a pin and a ring, the pin comprising a head at one end and having on the body thereof a first grooved portion with a plurality of locking grooves or slots enabling the ring engaged on the pin to fasten thereto by means of deformation and a second grooved portion for engaging with a tool for holding the pin during the extrusion of the ring on the first grooved portion, a rupture slot facilitating the detachment of the second portion once a stress threshold has been exceeded during fitting, characterized in that the first grooved portion of the pin is preformed to have a sequence of non-helical grooves, the start and end whereof are formed by grooves having different profiles to the identical grooves situated in the central portion of the sequence, the different profile adopting an identical depth but a greater width to those of the profile of the grooves situated in the central portion of the sequence, characterized in that the different profile is non-symmetrical.