Abstract: The present invention concerns a fastener arrangement made of a component and a screw element with an area for the application of force for a turning tool, where the component and the screw element, when fastened to each other, are in contact with each other by way of contact surfaces, and where the contact surface of the screw element on the side facing the component, has a convexly curved outer surface, and where the contact surface of the component has a concavely curved inner surface, while the outer surface and the inner surface are positioned coaxially with respect to a common longitudinal axis, which runs through the component and the screw element.

Abstract: The present invention concerns a fastener arrangement made of a component and a screw element with an area for the application of force for a turning tool, where the component and the screw element, when fastened to each other, are in contact with each other by way of contact surfaces, and where the contact surface of the screw element on the side facing the component, has a convexly curved outer surface, and where the contact surface of the component has a concavely curved inner surface, while the outer surface and the inner surface are positioned coaxially with respect to a common longitudinal axis, which runs through the component and the screw element.

Abstract: The present invention concerns a fastener arrangement made of a component and a screw element with an area for the application of force for a turning tool, where the component and the screw element, when fastened to each other, are in contact with each other by way of contact surfaces, and where the contact surface of the screw element on the side facing the component, has a convexly curved outer surface, and where the contact surface of the component has a concavely curved inner surface, while the outer surface and the inner surface are positioned coaxially with respect to a common longitudinal axis, which runs through the component and the screw element.

Abstract: The present invention relates to a connecting arrangement, comprising a bolt element having a shank (4) and comprising at least one washer which can be pushed onto the shank (4), the shank (4) and the washer having such a code that the washer can be pushed onto the shank (4) only in a predetermined position, in particular in such a way that a peripheral punching burr which is present points away from the head of the bolt element. In order to reduce the technological manufacturing outlay of such a connection while functionality remains at least at the same high level, it is proposed that the code consist of at least one convexly designed cross section (Q), which extends over at least a section of the length of the shank (4) and is asymmetrical with regard to all the radial axes (C-C, D-D) running through a central cross-section axis (X1) of the shank (4), and of a push-on opening, interlocking with this cross section (Q), of the second washer.

Abstract: The invention relates to a coating system for the lubricant coating of components. The system includes an electrodeposited oxidatively pretreated zinc-nickel coating and a dry lubricant layer and offers considerably improved adhesive properties as well as greater corrosion resistance and resistance to chemicals.

Abstract: The invention relates to a fixing device consisting of a component (2) and a screw element (1) which comprises a force application (10) for a rotating tool. The component (2) and the screw element (1) co-operate with each other in a fixed state. A contact surface (11) of the screw element (1) is embodied as a convex outer surface (12) on the side thereof facing the component, and a contact surface (11) of the component (2) is embodied as a concave inner surface (16). The outer surface (12) and the inner surface (16) are arranged coaxially in relation to a common longitudinal axis (X-X) extending through the component (2) and the screw element (1).

Abstract: The present invention relates to a connecting arrangement, comprising a bolt element having a shank (4) and comprising at least one washer which can be pushed onto the shank (4), the shank (4) and the washer having such a code that the washer can be pushed onto the shank (4) only in a predetermined position, in particular in such a way that a peripheral punching burr which is present points away from the head of the bolt element. In order to reduce the technological manufacturing outlay of such a connection while functionality remains at least at the same high level, it is proposed that the code consist of at least one convexly designed cross section (Q), which extends over at least a section of the length of the shank (4) and is asymmetrical with regard to all the radial axes (C-C, D-D) running through a central cross-section axis (X1) of the shank (4), and of a push-on opening, interlocking with this cross section (Q), of the second washer.

Abstract: The present invention relates to a connecting element which comprises a bolt element with a head and a shank adjoining the latter. The head is formed from a means of engagement for a tool, which is arranged concentrically in relation to a longitudinal bolt axis, and a first eccentric disk, which is arranged eccentrically in relation to the longitudinal bolt axis. At least one second eccentric disk (22), which has a circumferential punching burr, can be pushed onto the shank by way of an eccentrically arranged push-on opening (24). According to the invention, the shank and the second eccentric disk can only be pushed onto the shank in the correct position, such that the circumferential punching burr is oriented away from the head.

Abstract: The invention relates to a coating system for the lubricant coating of components. The system includes an electrodeposited oxidatively pretreated zinc-nickel coating and a dry lubricant layer and offers considerably improved adhesive properties as well as greater corrosion resistance and resistance to chemicals.

Abstract: The present invention relates to a connecting element which comprises a bolt element with a head and a shank adjoining the latter. The head is formed from a means of engagement for a tool, which is arranged concentrically in relation to a longitudinal bolt axis, and a first eccentric disk, which is arranged eccentrically in relation to the longitudinal bolt axis. At least one second eccentric disk (22), which has a circumferential punching burr, can be pushed onto the shank by way of an eccentrically arranged push-on opening (24). According to the invention, the shank and the second eccentric disk can only be pushed onto the shank in the correct position, such that the circumferential punching burr is oriented away from the head.