A fastening device (2;20) for assembling panels (170;180) in furniture, the device (2;20) having an axial extension along an axial direction and a lateral extension along a lateral direction, said device (2;20) comprising an upper part (4;40), and a lower part (5;50) a circumferential extending peripheral surface (10;110), the device (2;20) having an axially extending through passage (8;80) for the insertion of a pin the in the axial direction, wherein the fastening device (2;20) comprises elements for taking up forces along both the axial and lateral direction.