Abstract: A fastening assembly, comprising a first element forming a first contact surface and a second element forming a second contact surface, which for producing a clamping force may be moved relative to one another in an axial direction is disclosed. The fastening assembly also comprises a device for performing a relative motion of the two contact surfaces with respect to one another. The second element is provided in the form of a plastically deformable sleeve which may be detachably fastened to the first element designed as a pretensioning element. The disclosure further relates to a disposable sleeve for use in such a fastening assembly, and to a method for fixing and/or clamping at least one in particular multilayer component.

Abstract: A fastening assembly, comprising a first element forming a first contact surface and a second element forming a second contact surface, which for producing a clamping force may be moved relative to one another in an axial direction is disclosed. The fastening assembly also comprises a device for performing a relative motion of the two contact surfaces with respect to one another. The second element is provided in the form of a plastically deformable sleeve which may be detachably fastened to the first element designed as a pretensioning element. The disclosure further relates to a disposable sleeve for use in such a fastening assembly, and to a method for fixing and/or clamping at least one in particular multilayer component.

Abstract: A self-locking nut is provided having, at its periphery, a number of longitudinal channels (3) with semi-circular section intended to cooperate with drive balls carried by an appropriate tightening tool, said balls causing, at the end of tightening, the formation of a circular groove (10) by forcing back the metal situated between the channels (3), which results in radial deformation of the inner threads of the nut (1) at the level of said groove (10).