Abstract: A rivet may include a pin comprising: a threaded portion (36), a shank (38) and a head (40); and a bushing (32) comprising an essentially cylindrical body, said body comprising a deformation zone designed to form an external bulge (80); a collar (70) designed to receive the head of the pin; and a tapped portion (66) designed to engage with the threaded portion of the pin. The shank (38) of the pin comprises a first cylindrical portion (44) and a second cylindrical portion (46) connected by a shoulder (48), the first portion being adjacent to the head and having a first diameter, the second portion being adjacent to the threaded portion and having a second, smaller diameter.

Abstract: A nut (32) for assembling elements of a structure comprises a collar (64) capable of coming into contact with a front face of the structure; a tightening zone having an outer diameter (86) capable of being inserted into a hole of the structure; a deformation zone adjacent to the tightening zone and capable of forming a bulge against a rear face of the structure, opposite the front face; and a tapped portion (65) adjacent to the deformation zone. The nut may include grooving (82) on an outer circumference of at least one part of the deformation zone, a maximum diameter of said grooving (82) being less than or equal to the outer diameter (86) of the tightening zone.

Abstract: The invention concerns a fastener used to attach structural components that have aligned perforations with a nominal diameter (D), where the fastener comprises a minimum grip plane (Gmin) and a maximum grip plane (Gmax), and A screw (12) comprising an enlarged head and a threaded portion (22); A sleeve (30) comprising an enlarged head, a cylindrical tubular body and a tapped portion (36) that engages the threaded portion (22) of the screw, where the tapped portion (36) is adjacent to an internally smooth portion of the body (34) of the sleeve. This smooth portion has a thickness (E), a non-deformable area (A) adjacent to the head of the sleeve and a deformable area (B) adjacent the non-deformable area (A). The sleeve's deformable area (B) can be deformed into a bulb (48) intended to come into contact with a blind side (46) of the structural components.

Abstract: A rivet may include a pin comprising: a threaded portion (36), a shank (38) and a head (40); and a bushing (32) comprising an essentially cylindrical body, said body comprising a deformation zone designed to form an external bulge (80); a collar (70) designed to receive the head of the pin; and a tapped portion (66) designed to engage with the threaded portion of the pin. The shank (38) of the pin comprises a first cylindrical portion (44) and a second cylindrical portion (46) connected by a shoulder (48), the first portion being adjacent to the head and having a first diameter, the second portion being adjacent to the threaded portion and having a second, smaller diameter.

Abstract: The present invention relates to a nut (32) for assembling elements of a structure, said nut comprising: a collar (64) capable of coming into contact with a front face of the structure; a tightening zone having an outer diameter (86) capable of being inserted into a hole of the structure; a deformation zone adjacent to the tightening zone and capable of forming a bulge against a rear face of the structure, opposite the front face; and a tapped portion (65) adjacent to the deformation zone. The nut comprises grooving (82) on an outer circumference of at least one part of the deformation zone, a maximum diameter of said grooving (82) being less than or equal to the outer diameter (86) of the tightening zone.

Abstract: The invention concerns a fastener used to attach structural components that have aligned perforations with a nominal diameter (D), where the fastener comprises a minimum grip plane (Gmin) and a maximum grip plane (Gmax), and A screw (12) comprising an enlarged head and a threaded portion (22); A sleeve (30) comprising an enlarged head, a cylindrical tubular body and a tapped portion (36) that engages the threaded portion (22) of the screw, where the tapped portion (36) is adjacent to an internally smooth portion of the body (34) of the sleeve. This smooth portion has a thickness (E), a non-deformable area (A) adjacent to the head of the sleeve and a deformable area (B) adjacent the non-deformable area (A). The sleeve's deformable area (B) can be deformed into a bulb (48) intended to come into contact with a blind side (46) of the structural components.

Abstract: A fastening bolt has a threaded screw (11) with a terminal portion (18) whose diameter (19) is less than that of the threaded portion, and an end surface (21) of said terminal portion has a transverse opening groove (22). The fastening bolt also has a nut (30) comprising a threaded body (32) and an unthreaded crown (34) drilled with at least two holes (35) diametrically opposite to one another and a rod (23), able to fit in the groove of the screw and in the two lateral holes of the nut to lock the bolt. The body of the nut comprises a driving portion (38), as well as a cylindrical portion (39) less thick than the driving portion, and the cylindrical portion (39) of the nut has an elliptical deformation that was previously a circular shape.

Abstract: A rivet for blind fastening may include a screw with a handling element, a break groove, a head separated from the handling element by the break groove, and a threaded part. The rivet may also include a sleeve with a collar and a tubular shank having an internal thread intended to come into engagement with the threaded part of the screw. The handling element includes a first handling portion able to guide introduction of the rivet in a setting tool, and a second handling portion able to transmit a torque, the two handling portions being separated by a blocking portion able to limit an axial movement of the rivet in a setting tool. A setting nose may be used for installing such a rivet, and the rivet, setting nose and a setting method can be used in the assembly of aircraft structures.

Abstract: The invention relates to a securing device (10) for a structure (11) having an open-ended cylindrical bore (13a), the securing device comprising: an insert (15) comprising a tapped tubular body (16) and a head (18), the extremity (20) of the body opposite the head comprising an annular cavity holding a ring (21) made of a plastic material; a pin (22) comprising a cylindrical tapped rod (16) assembled with the tapping of the insert and a head (23), the extremity (30) of the cylindrical threaded rod being tapered; the device being characterized in that the threaded rod is introduced into the insert on the ring side such that, in the assembled state, the head of the insert and the head of the pin form the terminal ends of the securing device (10). The invention also relates to an assembly for the installation of such a device, and also to an installation method.

Abstract: The invention relates to a fastening bolt (10) comprising: A screw (11), said screw having a threaded portion (17) and a terminal portion (18) whose diameter (19) is less than that of the threaded portion, an end surface (21) of said terminal portion comprising a transverse opening groove (22); A nut (30) comprising a threaded body (32) and an unthreaded crown (34) drilled with at least two holes (35) diametrically opposite to one another; A rod (23), able to fit in the groove of the screw and in the two lateral holes of the nut to lock the bolt; the threaded rod of the nut comprises a driving portion (38), as well as a chimney (34) less thick than the driving portion; the nut comes from a method comprising an elliptical deformation of the chimney previously in a circular shape.

Abstract: A rivet for blind fastening may include a screw with a handling element, a break groove, a head separated from the handling element by the break groove, and a threaded part; a sleeve with a collar and a tubular shank comprising an internal thread intended to come into engagement with the threaded part of the screw. The handling element comprises a first handling portion able to guide the introduction of the rivet in a setting tool, and a second handling portion able to transmit a torque, the two handling portions being separated by blocking portion able to limit an axial movement of the rivet in a setting tool. A setting nose for installing such a rivet, and a setting method are also described. These in particular are applicable to the assembly of aircraft structures.