Abstract: The invention relates to a cage nut (1) having a retaining device, and to a method for producing the same. The cage nut (1) comprises a nut (4) having a radially protruding rectangular flange (5) and a threaded sleeve-like seat (6) for a screw. A retaining means (7) having a through-opening (8), through which the sleeve-like screw seat (6) passes, engages in a bracket-like manner over the rectangular flange (5) of the nut. A retaining collar (9), which surrounds the sleeve-like screw seat (6) of the nut (4), is supported on the retaining means (7) in the region of the through-opening (8). The retaining collar (9) is one-piece and has first and second cover elements (10, 11) covering the through-opening (8) of the retaining means (7) on both sides. The cover elements (10, 11) are mechanically connected via a connecting bush (12) concentrically adjoining the screw seat (6). The connecting bush (12) is radially spaced from the through-opening (8).

Abstract: Rotationally symmetrical force-application means with, as viewed axially, a star-shaped outer contour or inner contour, for connecting elements, wherein the individual arms of the star are designed as pointed arcs, of which the outer points lie on a common outer circle, wherein an associated counterpart, in particular a bit, insert or screw head, has a mating contour which is adapted to the contour of the force-application means such that the radii of the flanks of the force-application means and the counterpart end up butting against one another in such a manner as to achieve a planar pressing surface.

Abstract: The invention relates to a self-tapping screw with a head and an outer thread support. The core cross-section of the outer thread support has the shape of a rounded n-sided polygon, n being a prime number>3.

Abstract: A part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14), which are connected by a rotationally symmetrical weld (16), wherein a main loading area (22) occurs in the vicinity of the weld (16), and only the weld (16) and the surroundings (22) thereof are strengthened by case hardening in the extreme fiber in such a way that case strengthening is present there, and a method for producing a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14) by welding a rotationally symmetrical weld (16) between the two parts (12, 14), wherein after the parts (12, 14) are welded, the weld (16) and the surroundings (22) thereof are case hardened and the hardened zone (16, 22) is quenched immediately thereafter.

Abstract: The invention relates to a cage nut (10) comprising a cage (12) with an opening and a nut body (14) that is accommodated in the cage (12) and comprises an enlarged flange (16) and a hollow cylindrical neck (18) with an internal thread (20). A spacer element (22) is arranged between the nut body (14) and the cage (12) and comprises at least one spring element (34) that acts perpendicularly in relation to the axial direction of the internal thread (20).

Abstract: Cage nut for installation in an elongate, preferably rectangular opening which is only accessible from one side, comprising a nut body with a cylindrical internal thread carrier having an internal thread and an abutment part attached thereto, and a cage encompassing the nut body, wherein the abutment part is adapted to the shape of the opening and has a slightly smaller width and a slightly shorter length than the opening, although the length of the abutment part is significantly greater than the width of the opening; the cage is configured resiliently and is adapted to the shape of the opening such that it can be clipped into the opening and the cage supports stop elements which only allow a rotation of the abutment part with respect to the cage in the screwing-in direction of the internal thread from an installation position parallel to the longitudinal direction of the cage into a retaining position approximately perpendicular thereto.

Abstract: The invention relates to a washer (10), screw or nut having an end surface (12) which faces toward a workpiece, wherein the end surface (12) is provided with a concentric, annularly encircling web (14), and that region (18) of the end surface (12) which is situated outside the encircling web (14) tapers conically toward the web (14) from the outside, with the inclination from the outside to the inside being directed away from the workpiece.

Abstract: An electrically insulating cage nut (10) having a nut body (12) which is held in a cage (14), in which the nut body (12) has a cylindrical attachment (16) and a broadened holding element (18), and the cylindrical attachment (16) has an internal thread (20) and extends through an opening (22) in the cage (14) to the outside, wherein the internal diameter of the opening (22) is substantially larger than the external diameter of the cylindrical attachment (16), but is smaller than the external size of the holding element (18), and an insulator apparatus (24) is arranged between the cage (14) and cylindrical attachment (16), wherein the insulator apparatus (24) is formed integrally, and in consequence the cage nut (10) consists of only three components (12, 14, 24).

Abstract: Phosphated screw which after phosphating is provided with a siliceous sealing layer and has been rolled only after phosphating and after application of the siliceous sealing layer.

Abstract: This invention relates to a self-locking screw (16; 116) in which the flanks (18; 118), which are loaded when the screw (16; 116) is screwed, are provided with an arched portion (20; 120).

Abstract: The invention relates to a cage nut (10) comprising a cage (12) with an opening and a nut body (14) that is accommodated in the cage (12) and comprises an enlarged flange (16) and a hollow cylindrical neck (18) with an internal thread (20). A spacer element (22) is arranged between the nut body (14) and the cage (12) and comprises at least one spring element (34) that acts perpendicularly in relation to the axial direction of the internal thread (20).

Abstract: Rotationally symmetrical force-application means with, as viewed axially, a star-shaped outer contour or inner contour, preferably for connecting elements, wherein the individual arms of the star are designed as pointed arcs, of which the outer points lie on a common outer circle, wherein an associated counterpart, in particular a bit, insert or screw head, has a mating contour which is adapted to the contour of the force-application means such that the radii of the flanks of the force-application means and the counterpart end up butting against one another in such a manner as to achieve a planar pressing surface.

Abstract: An electrically conductive screw connection between two parts (10, 12) which are screwed to one another by means of a screw (16) with a screw head (18) and with a shank (22) with an external thread (24) and by means of a nut (28), wherein the screw (16) runs through a bore (14) in one part (10), wherein the electrical contact between the other part (12) and the screw (16) is produced by teeth (27) on the workpiece-side surface of the screw head (18) and/or of the nut (28) or of a washer (30) arranged between the nut (28) and the other part (12), whereas the contact between the screw (16) and one part (10) is produced by a bushing (34; 34?) which is formed so as to be radially elastic and which is arranged coaxially with respect to the shank (22) of the screw (16) in a portion (15) of the bore (14) with an enlarged inner diameter.

Abstract: Phosphated screw which after phosphating is provided with a siliceous sealing layer and has been rolled only after phosphating and after application of the siliceous sealing layer.

Abstract: A device for fastening side impact supports, and door or flap hinges (10) to the doors (12) or flaps or to the bodywork of motor vehicles, with a screw (141) which extends through an opening in the door (12), the flap or the bodywork sheet and through an opening in the side impact support or hinge (10), and is secured by a nut (16), in which a hollow absorber element (18) is arranged between the nut (16) and the sheet of the door (12), the flap or the bodywork or the side impact support or the hinge (10), which absorber element is penetrated by the screw (14?) and has side walls (20) which run substantially parallel to the axis of rotation of the screw (14?), and two abutment surfaces (22, 26, 34) each running perpendicularly to the axis of rotation of the screw (14?), wherein the one abutment surface (26, 34) is supported on the sheet of the door (12), the flap or the bodywork or the side impact support or the hinge (10) while the other abutment surface (22) bears the nut (16).

Abstract: The invention relates to a self-locking nut (10) having an internal thread (12) with a core hole which has one or a plurality of regions (14) having a reduced internal diameter.

Abstract: Cage nut (10) for installation in an elongate, preferably rectangular opening (12) which is only accessible from one side, comprising a nut body (16) with a cylindrical internal thread carrier (20) having an internal thread (22) and an abutment part (24) attached thereto, and a cage (18) encompassing the nut body (16), wherein the abutment part (24) is adapted to the shape of the opening (12) and has a slightly smaller width and a slightly shorter length than the opening (12), although the length of the abutment part (24) is significantly greater than the width of the opening (12); the cage (18) is configured resiliently and is adapted to the shape of the opening (12) such that it can be clipped into the opening (12) and the cage (18) supports stop elements (38) which only allow a rotation of the abutment part (24) with respect to the cage (18) in the screwing-in direction of the internal thread (22) from an installation position parallel to the longitudinal direction of the cage (18) into a retaining posi

Abstract: The invention relates to a method for setting connecting elements (16), such as screws or blind rivets, which are self-drilling without chip formation, in one or more plates, wherein the plate(s) are heated by electrical energy shortly before the start of the setting process, wherein the heating is accomplished by means of an induction coil (26), which is arranged near a point on the plate(s) at which the connecting element (16) is set. The invention further relates to a device (10) for setting a connecting element (16), which is self-drilling without chip formation, in one or more plates, comprising an induction coil (26), which at least before and/or during the setting process is arranged near a point on the plate(s), at which the connecting element (16) is set.

Abstract: The invention relates to an electrically conducting screw connection between two parts (10, 12) which are fastened to each other by a screw (16) having a screw head (18) and a shaft (22) and by a nut (28), wherein the screw (16) extends through a hole (14) in one of the parts (10), wherein the electrical contact between the other part (12) and the screw (16) is established by teeth (27) on the workpiece-side surface of the screw head (18) and/or of the nut (28) or of a washer (30) arranged between the nut (28) and the outer part (12), while the contact between the screw (16) and the one part (10) is established by elevations (26) on the shaft (22) of the screw (16), the outer diameter of the elevations being slightly greater than the inner diameter of the hole (14) and the elevations being arranged between the external thread (24) and the screw head (18), wherein the elevations (26) have flanks (42, 44) that extend at an angle and that meet each other at an angle of approximately 60° and that are connected to

Abstract: The invention relates to a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14), which are connected by a rotationally symmetrical weld (16), wherein a main loading area (22) occurs in the vicinity of the weld (16), and only the weld (16) and the surroundings (22) thereof are strengthened by case hardening in the extreme fiber in such a way that case strengthening is present there, and a method for producing a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14) by welding a rotationally symmetrical weld (16) between the two parts (12, 14), wherein after the parts (12, 14) are welded, the weld (16) and the surroundings (22) thereof are case hardened and the hardened zone (16, 22) is quenched immediately thereafter.