A device suitable for fixing panels comprises a male part having a mounting head and an elongate body between the mounting head and a retaining head. The retaining head has a retaining surface directed towards the mounting head, a snap-fastener surface, and a retaining edge defined by the intersection of the retaining surface with the snap-fastener surface. A female part of the device has a receptacle for the body of the male part and at least one circumferential sector for retaining the retaining head of the male part in the axial direction. The retaining edge is adapted to penetrate the retaining sector(s) to provide an axial retention opposing withdrawal of the male part from the receptacle in the female part.
