Abstract: The invention relates to a fastening device for holding together a stack of at least two panels, comprising a female piece in the form of a clasp, and a male piece having a part in the form of a head, and a part in the form of shaft with a cross section in the form of a cam which can be axially inserted into the clasp. The device includes a component for immobilization of the male piece in the female piece which is connected with clasp and is produced in the form of finger which can be moved by deliberate action between a position of engagement in a notch of the head of the male piece, and a position of disengagement from said notch.

Abstract: A device for assembling two panels and formed by a male part (1) and a female part (2), designed to be inserted into bores provided in these panels, the female part being constituted by an elastically deformable clip (2) provided with a cap (20). The cap (2) is itself elastically deformable, so as to prevent any play between the panels.

Abstract: The invention relates to a fastening device for holding together a stack of at least two panels, comprising a female piece in the form of a clasp, and a male piece having a part in the form of a head, and a part in the form of shaft with a cross section in the form of a cam which can be axially inserted into the clasp. The device includes a component for immobilization of the male piece in the female piece which is connected with clasp and is produced in the form of finger which can be moved by deliberate action between a position of engagement in a notch of the head of the male piece, and a position of disengagement from said notch.

Abstract: The invention concerns a hold-down fastener including a barrel including internal lips cooperating with a screw thread, the lips being directed inwards of the barrel and inclined in a direction of insertion of the screw into the barrel. Each lip includes at least two parts, a first part connected to the barrel and inclined at a first angle relative to the barrel, on the side for inserting the screw, and a second part connected to the first part and inclined at a second angle relative to the barrel, on the side for inserting the screw. The second angle is larger than the first angle and less than 180° to facilitate the insertion of the screw into the barrel, while maintaining the fastener screw-holding power after the screw has been inserted. The invention is useful for fixing in place electric cables, piping systems, and other cylindrical articles.