a panel 1 is shown in fig3 the panel 1 has an upper or accessible face 20 and a blind or opposite face 30 such a panel has a plurality of mortises 7 that pass through said panel 1 and open onto each of the upper face 20 and opposite face 30 the mortises 7 of the plurality of mortises are aligned on the two main faces of the panel 1 this variant of a panel 1 that is equipped with two fastening devices 100 according to the invention and is shown in fig3 allows a yoke 8 for fastening an aircraft seat to be fastened the fastening yoke 8 lies next to two mortises 7 that accommodate two fastening devices 100 according to the invention each fastening device 100 has an anchoring jaw 109 that lies in contact with the panel 1 and in contact with the fastening yoke 8 each fastening device 100 also has a clamping member 102 having a cylindrical rod 103 of which the end that emerges from the upper face 20 of the panel 1 has means 104 for securing the clamping member 102 to the yoke 8 said securing means 104 being formed by a threaded rod 104 and a complementary nut 16 a device 100 for fastening a fastening yoke 8 in the blocking position to a panel 1 is shown in longitudinal section in fig4 the panel 1 comprises a self supporting board 2 and a beam 5 for stiffening said self supporting board 2 the panel 1 has mortises 7 that pass through the self supporting board 2 and the adherent wall 12.