Abstract: A threaded fastener (10) useful for fastening soft materials over an extended period of time includes a washer (16) having outwardly extending arms (46) received in axially extending channels (52) in an object (60) to be fastened, and a bolt (12) extending through the washer, the bolt having a head including a projection (26) engaging a locking feature (38,40) on the washer to resist relative rotation between the washer and the bolt in a fastened assembly.

Abstract: A device for pre-assembly of a pin-shaped device in a through-hole of a structural element, including a cylinder barrel-shaped sleeve, a plurality of first holding elements disposed at an inner side of the sleeve and projecting inwards, and second holding elements projecting outwards from both ends of the sleeve and being elastically deformable, such that upon insertion of the fastening device into the through-hole, the second holding elements can perform an evasive movement.

Abstract: A fastening means for pre-assembly of a pin-shaped joining means in a through-hole of a structural element comprising a cylinder barrel-shaped sleeve, a plurality of first holding elements disposed at the inner side of the sleeve and projecting inwards, and a plurality of third holding elements disposed at the outer side of the sleeve and projecting outwards, and second holding elements projecting outwards from both ends of the sleeve, that project farther outwards than the third holding elements, and that are elastically deformable, such that upon insertion of the fastening means into the through-hole, they perform an evasive movement.

Abstract: A system for attaching a structural member to a supporting member, the supporting member having at least one stud which extends through an opening of the structural member, the system comprising a sleeve having as radial flange at one end adapted to be introduced into the opening, an annular sealing element positioned on the sleeve and adapted to engage the associated surface of the structural member, an integral nut arrangement, preferably of spring steel, which has a nut portion adapted to be threaded onto the stud, a fastening portion adapted to be secured to the flange, the fastening portion being rotatable with the flange and engages axially the radial flange of the sleeve, and a deformable portion between the nut portion and fastening portion which allows a certain axial deformation if the nut arrangement is threaded onto the stud with a predetermined torque into engagement with the radial flange, the deformable portion and the fastening portion forming a passage for the stud.

Abstract: A system for attaching a structural member to a supporting member, the supporting member having at least one stud which extends through an opening of the structural member, the system comprising the following features:

Abstract: An arrangement for fastening of an assembly part on a carrier part includes at least one fastening screw, a sleeve, and a flexible assembly ring whose inner diameter is smaller than an outer diameter of a sleeve head flange and foot flange and which is arranged between the head flange and foot flange on the sleeve. The assembly part includes a through-bore in the assembly part whose inner diameter is at lest as large as the outer diameter of the foot flange, into which the sleeve is inserted. The lower side of the head flange is indirectly or directly supported on the upper edge region of the through-bore. The inner diameter of the through-bore is dimensioned such that the assembly ring is radially pressed together therein and by way of this clamped in and/or the through-bore comprises an undercut with an inner diameter so that the assembly ring under radial compression and subsequent expansion is pushed through the undercut and by which the assembly ring is retained in the through-bore.