Abstract: The invention concerns a family of insertable temporary fasteners (100) comprising the following: a body (101) with a bearing face (102) at least one clip (103) with a hooking spur (104) a threaded rod (105, 205) connected to the clip, with a control nut (107, 207) screwed onto the said rod The family comprises at least two temporary fasteners (100) with different diameters and nuts with different lengths (116). The invention also concerns a set comprising such a family of fasteners, along with an installation device (13) comprising a means (26, 30) of detecting the length of the nut. The invention enables the installation device to automatically determine the appropriate tightening torque when installing the fastener based on the length of the nut.

Abstract: The invention relates to a riveting tack (50) to be introduced into coaxial openings of at least two elements to be assembled, and comprising a hollow cylindrical body (51), a rod (53) passing through the hollow body and partially provided with an external thread (52a), a nut (54) mounted on the threaded end (53a), two half-clips (56) fixed to the rod (53) and comprising hooking lips (57) on the ends thereof, and a spacer (58) arranged between the two half-clips (56), the rod/half-clip set being axially mobile along the spacer (58) between a first position wherein the hooking lips (57) are radially close, and a second position wherein the two half-clips (56) are retracted inside the hollow body (51) and radially distanced from each other. The invention is characterized in that the set formed by the half-clips (56) and the spacer (58) is, in the cross-section thereof, in the form of a near-perfect circle having a diameter identical to the inner diameter of the openings.

Abstract: The invention relates to a device (1; 20; 51) for assembling pre-bored (15) elements (2; 3), the elements together having a reference thickness (18) that may vary up to an actual maximum thickness (40), the device comprising a male element (4; 21; 52) comprising a shank (6; 22; 54) extending in a thread (11; 27) or swaging grooves (59), an external surface (12; 28; 60) having a height (13; 61) equal to a height (14) of the shank, chosen so as to correspond to at least the actual maximum thickness (40) of the elements to be assembled, characterized in that the external surface has a visual reference mark (16; 35; 63), located at a distance (17) of a lower limit (9; 34; 57), or extending over a distance (17) from a lower limit up to an upper limit (42A; 42B; 65) toward the head.

Abstract: The invention relates to a method for locking a nut with an inner thread, in which: the ultimate tensile strength (Rm) and yield strength (Re) of the material constituting the nut are determined according to temperature, an optimal heating temperature is determined, at which a maximum of a relative plastic interval of the material is reached, said relative plastic interval being defined by the formula (Rm?Re)/Rm, a maximum heating time is determined, above which the nut presents the risk of deterioration of its microstructure and/or of its initial mechanical strength, the nut is heated to a temperature substantially equal to said optimal temperature and for a heating time of less than said maximum time so that the initial microstructure and mechanical strength of the material constituting the nut are preserved, a body of the nut is deformed locally by bending.