Assembly for an aircraft, said assembly having: - a pylon having an upper spar, a starboard-side lateral panel and a port-side lateral panel that extend vertically on either side of the upper spar and two lateral scoops, each one being fastened on the outside against a lateral panel and having a surface for contact with the upper spar, - a wing having a skin, a front spar extending on the inside of the skin, a starboard-side front bracket, a port-side front bracket, wherein each front bracket (212a-b) has a front recess, wherein, for each front recess, the associated front bracket has an open bore passing through it that opens into said recess, wherein the front spar has a front pleat, an intermediate pleat and a rear pleat, wherein the front pleat has a proximal end as one with a lower edge of the intermediate pleat and a distal end that extends forwards relative to the proximal end, and wherein the rear pleat has a proximal end as one with an upper edge of the intermediate pleat and a distal end that extends rearwards relative to the proximal end, wherein each front bracket (212a-b) is positioned in front of the intermediate pleat against the front pleat and the intermediate pleat, and wherein each front bracket (212a-b) is fastened to said intermediate pleat, wherein, for each front recess, each one of the front pleat, the skin, the upper spar and the associated lateral scoop has a bore passing through it that is coaxial with the open bore corresponding to the front recess, characterized in that the wing also comprises a starboard-side rear bracket and a port-side rear bracket, wherein each rear bracket (214a-b) has a rear recess, and wherein each rear bracket (214a-b) is positioned behind the intermediate pleat against the intermediate pleat and the skin, and wherein each rear bracket (214a-b) is fastened to said intermediate pleat, wherein, for each rear recess, the associated rear bracket has an open bore passing through it that opens into said recess, wherein, for each rear recess, each one of the skin, the upper spar and the associated lateral scoop has a bore passing through it that is coaxial with the open bore corresponding to the rear recess, and wherein, for each of the front and rear recesses (218, 220), the assembly also has a fastening bolt having a nut housed in said recess (218, 220), and a screw of which the threaded shank passes through the coaxial bores and the open bore and is screwed into the nut, and of which the head bears against the lateral scoop. - a pylon having an upper spar, a starboard-side lateral panel and a port-side lateral panel that extend vertically on either side of the upper spar and two lateral scoops, each one being fastened on the outside against a lateral panel and having a surface for contact with the upper spar, - a wing having a skin, a front spar extending on the inside of the skin, a starboard-side front bracket, a port-side front bracket, wherein each front bracket (212a-b) has a front recess, wherein, for each front recess, the associated front bracket has an open bore passing through it that opens into said recess, wherein the front spar has a front pleat, an intermediate pleat and a rear pleat, wherein the front pleat has a proximal end as one with a lower edge of the intermediate pleat and a distal end that extends forwards relative to the proximal end, and wherein the rear pleat has a proximal end as one with an upper edge of the intermediate pleat and a distal end that extends rearwards relative to the proximal end, wherein each front bracket (212a-b) is positioned in front of the intermediate pleat against the front pleat and the intermediate pleat, and wherein each front bracket (212a-b) is fastened to said intermediate pleat, wherein, for each front recess, each one of the front pleat, the skin, the upper spar and the associated lateral scoop has a bore passing through it that is coaxial with the open bore corresponding to the front recess, characterized in that the wing also comprises a starboard-side rear bracket and a port-side rear bracket, wherein each rear bracket (214a-b) has a rear recess, and wherein each rear bracket (214a-b) is positioned behind the intermediate pleat against the intermediate pleat and the skin, and wherein each rear bracket (214a-b) is fastened to said intermediate pleat, wherein, for each rear recess, the associated rear bracket has an open bore passing through it that opens into said recess, wherein, for each rear recess, each one of the skin, the upper spar and the associated lateral scoop has a bore passing through it that is coaxial with the open bore corresponding to the rear recess, and wherein, for each of the front and rear recesses (218, 220), the assembly also has a fastening bolt having a nut housed in said recess (218, 220), and a screw of which the threaded shank passes through the coaxial bores and the open bore and is screwed into the nut, and of which the head bears against the lateral scoop.