Abstract: A screw connection having a screw section and a nut threaded thereon. A self-locking effect of the nut on the screw section is achieved in a simple manner in that an intermediate disk is supported non-rotatably on the screw section and is received on the nut so as to be rotatable relative to the nut. The intermediate disk includes a grid distributed around the circumference of the intermediate disk, and the nut carries at least one resiliently elastic, radially displaceable catch formed by a sheet-metal part which, after installing the nut, positively engages the grid to lock the nut against rotation relative to the screw section and intermediate disk. Upon application of a wrench to the nut, the at least one resilient, radially displaceable catch is compressed and drawn out of engagement with the grid, so that the nut can be rotated relative to the screw section.

Abstract: A lock nut includes a nut body in which there is a drill hole equipped with an internal thread for a bolt body equipped with an external thread. In the nut, there are provided essentially axial cuts which extend to the drill hole over part of its length. Locking claws are positioned in the cuts. The locking claws bite when pressed against the bolt to prevent the nut from opening. The cut is of such a shape that a fulcrum is created for the locking claw, with the aid of which the locking claw can be levered away from the bolt.

Abstract: Provided is a fall-off preventing element and a loosening preventing nut, which, by a wire of a coil spring, with a free lower end, being fitted onto a thread groove of a bolt, can prevent fall-off of a nut or loosening of a nut. A fall-off preventing element is screwed onto a bolt and includes a coil spring portion and a cylindrical main body affixing an upper end of the coil spring portion and having an opening formed therein in which a lower end of the coil spring portion is latched. The coil spring portion is made smaller in its inner diameter than the outer diameter of a leg portion of the bolt. The lower end of the coil spring portion is latched in a diameter-expanded state to the cylindrical main body, and the lower end of the coil spring portion is enabled to move in a diameter-expanding direction.

Abstract: A structure for attaching to a support a protective member having a rib comprises a single-piece clip with a rib-fastening section and a support-fastening section. The rib-fastening section has a pair of walls defining a space into which the rib is inserted, and the walls have respective resilient pawls that engage opposite sides of the rib to resist withdrawal of the rib from the space. The walls have reinforcing braces outside the space. The support-fastening section has a tube with a tapered lead-in member for receiving a stud projecting from the support.

Abstract: A holder is disclosed for mounting objects to a fastener. The holder includes a holding section for mounting object and an anchoring section for mounting the holder onto the fastener, the anchoring section including a cylindrical recessed portion having a circular opening, a bottom and a first inward circumferential surface adapted to engage an outward circumferential surface of the fastener, and an opening in the bottom surface comprising a second inward circumferential surface adapted to engage a second outward circumferential surface on the fastener.

Abstract: A lock nut device consists of a lock nut (22) and a lock spring (31). The spring is bent into an U-shape and extends in a axial plane over the nut. It has spring legs (32) lying in grooves (25) in the nut and has end portions formed for engagement with the profile portion (16) on a non-rotatable element (4). In the engagement position, the legs are at such a distance from the nut surface that, with the aid of a socket forced over the nut, they can be pressed towards the nut surface, thus moving the end portion from the engagement position.

Abstract: An annular fairing forming a bolt guard associated with the heads of screws of an attachment carries, inside thereof and in line with each screw, first cylindrical sockets each of which comprises notch-shaped cut-outs at its inner end which cooperate with a pair of first lugs formed at the end of a respective second socket disposed within the first socket and further comprising a pair of inwardly curved second lugs cooperating with the head of the screw in such a way as to prervent rotation of the screw.

Abstract: This assembly comprises a collar (3) having splines cooperating with splines on the bolt (1) and lateral tabs (4) in contact with flat sides of the nut (2). This assembly further comprises at least one bent elastically yieldable locking element (5, 5') having a first branch (6, 6') trapped between a tab (4) of the collar (3) and a flat side of the nut, a second branch (8, 8') having an aperture (9, 9') through which extends the bolt and which has an edge engaged between screw threads of the bolt. By exerting a lateral pressure on the locking elements (5, 5'), the screw threads of the bolt are elastically disengaged.

Abstract: An economical alternative to throw away lock nuts is provided by a retainer that fits to or over a conventionally threaded nut. Splines on the shaft, and resilient fingers on the retainer, are mismatched in number by one, assuring that they interfit with at least one finger blocked by a spline, or closed to it, so that the nut cannot be turned significantly back. The retainer can be easily removed, so that both it and the nut may be reused.