Load-bearing structure for sets of shelves

A load-bearing structure for sets of shelves, the load-bearing structure comprising:

• at least one vertical upright, provided with at least one longitudinal wall and with at least one fastening opening made along said longitudinal wall;
• and
• at least one fastening body, provided with at least one fastening wall and with at least one fastening portion made cantilevered on said fastening wall, insertable inside said fastening opening and movable in a sliding manner inside said fastening opening between a fastening configuration, in which said fastening portion is coupled to said fastening opening, by fastening said vertical upright to said fastening body, and at least one free configuration, in which said fastening portion is uncoupled from said fastening opening, freeing said vertical upright from said fastening body,
• wherein said fastening portion comprises a first fastening element, which extends along a first direction of extension, and a second fastening element, which extends along a second direction of extension substantially transverse to said first direction of extension, said first and said second fastening element being adapted to fasten to said longitudinal wall in said fastening configuration, and
• wherein in the fastening configuration, the first fastening element and the second fastening element extend along the first direction of extension A and the second direction of extension, respectively, inside said fastening opening to fasten to said longitudinal wall at a point where at least two different fastening points are located.