Abstract: The invention relates to a screw element comprising an internal torque limitation for fastening a liquid-conducting line to a device connector or to a coupling for a further line, said screw element having a connection part, which preferably has a thread, and an actuation part; and having a torque limiting unit that limits a torque that can be transmitted from the actuation part to the connection part, wherein the torque limiting unit is arranged between the connection part and the actuation part and has a limiting element, in particular a separate limiting element, that can be assembled from at least two limiting element parts connectable to one another and that limits the torque limiting unit in an axial direction of a longitudinal axis of the screw element. The invention further relates to a system comprising at least one screw element and a line fastened to the screw element.

Abstract: A fastening assembly includes a mounting cylinder frame, a movable part and a turnover part, the mounting cylinder frame is provided with a first vertical beam and a transmission rod, the mounting cylinder is provided with a butting block at the top of the first vertical beam, the transmission rod passes through the butting block, the side wall of the first vertical beam is provided with a bulge, the movable part is connected with the transmission rod, and the turnover part is arranged on the first vertical beam and rotationally connected with the movable part. The turnover part is butted with the bulge, the turnover part is located between the butting block and the movable part, and has a vertical state and a horizontal state. The transmission rod is used to drive the turnover part to switch between the horizontal state or the vertical state.

Abstract: A nut is configured to be secured to a bolt. The nut includes a main body that defines an axially aligned bore with threads disposed on an inner wall thereof. Further, the nut includes a dome-shaped head that has an axially aligned aperture and that is provided to be deformed by threads on the bolt when a predetermined burst-through torque is applied thereto.

Abstract: A hydraulic tensioning and release tool for an expansion fastener of a type having an elongate member with a tapered portion for fastening a workpiece. The tool includes a sleeve for placement about the tapered portion; a cylinder(s) including a cylinder for generating compressive force against the workpiece; a release piston for displacing the sleeve and a tension piston for coupling to elongate member. The tension piston and the cylinder(s) defining a tension chamber and the release piston. One of cylinder(s) defines at least one release chamber. Hydraulic ports are in fluid communication with the tension chamber and the release chamber for application of hydraulic pressure to displace the tension piston and the release piston for respectively tensioning the elongate member and for releasing the sleeve from the tapered portion. A tension retaining arrangement retains the elongate member in tension subsequent to removal of hydraulic pressure from the tensioning chamber.

Abstract: A locknut includes a nut body having a threaded through opening therein extending between a first end and a second end. A pocket is defined within the second end of the nut body. A spring member disposed within the pocket includes a pair of leg members joined together by an apex member so that the leg members are disposed in substantially parallel, spaced-apart relation to one another. The leg members define locking surfaces thereon so that when the externally threaded member is threaded into the threaded through opening defined by the nut body the externally threaded member contacts the locking surfaces. The locking surfaces exert pressure on the externally threaded member at substantially opposed radial locations to develop a locking force between the nut body and the externally threaded member.

Abstract: A shear bolt for a junction of electrical conductors includes a tool seat for engagement of the shear bolt by a screwing tool, an externally threaded portion to be screwed in a terminal body of the junction, along a screwing axis, and a tightening portion for engaging an electrical conductor to be tightened in the terminal body. The tool seat is formed at the threaded portion and the tightening portion is connected to the threaded portion on an opposite side with respect to the tool seat. The shear bolt can be sheared in one or more programmed rupture areas in the threaded portion when exceeding a predetermined tightening torque for each of the programmed rupture areas, respectively. Even with the screw unscrewed, the tightening portion is connected to the threaded portion and is rotatable with respect to the threaded portion about the screwing axis and non-detachable from the threaded portion.

Abstract: A fastener and a method of fastening are provided. The fastener can comprise a first end, an oppositely disposed second end, and an elongate portion intermediate the first end and the second end. The elongate portion comprises a first region adjacent to the first end and a second region adjacent to the second end. The first region extends a distance along the elongate portion and has a first diameter. The second region extends a distance along the elongate portion and has a second diameter different from the first diameter. The fastener comprises a transition zone which extends a distance along the elongate portion and connects the first region and the second region. The transition zone comprises a radiused region and a taper region.

Abstract: An anti-slippage fastener that utilizes a plurality of engagement features to prevent slippage and facilitate torque transfer between a torque-tool and the fastener. The fastener includes a shank, a fastener head, and an external threading. The fastener head includes a rotation axis and a plurality of engagement walls; wherein the engagement walls are radially distributed about the rotation axis. Each of the engagement walls includes a first transversal line, a second transversal line, and a partially-circular portion. The first transversal line is terminally connected to the partially-circular portion. The second transversal line is terminally connected to the partially-circular portion, opposite the first transversal line. A center of the partially-circular portion is oriented away from the rotation axis. The shank is concentrically connected to the fastener head to act as the body of the fastener. The external threading is laterally connected along the shank, similar to traditional fasteners.

Abstract: An automotive component is described, comprising a flange, which has a through hole, and a screw, which is inserted in the through hole. According to this disclosure, at least three clamping ribs are provided, extending in an axial direction, in the through hole.

Abstract: A bushing assembly comprises a bushing element having a first surface, which is adapted to come into contact with a shoulder, and a threaded hole, which defines and axis and is adapted to be engaged by a screw; and a cage element, which is fitted around the bushing element so that the bushing element is supported and is floating; the cage element is adapted to be fixed to the shoulder and is provided with at least one opening; the opening defines an end abutment of the cage element; the bushing element comprises at least one stop portion, which engages the opening with an angular clearance and is movable around the axis at least between a first angular position, in which the stop portion is spaced apart from the abutment, and a second angular position, in which the stop portion is in contact with the abutment so as to prevent the bushing element from rotating past the second angular position; the stop portion is defined by an appendage element, which is distinct from the surface and the surface is circular.

Abstract: A rivet fastener assembly is configured to securely clamp together one or more components. The rivet fastener assembly includes a pin and a rivet body having a collar and a column extending from the collar. The rivet body further includes a collar stop configured to provide a positive locating feature for the pin once assembled.

Abstract: A self-locking nut includes a main-nut body and a deformable-nut body. The main-nut body has a recess leading into an interior threaded bore forming x turns of an internal thread therein. The deformable-nut body has an outer flange and an interior threaded bore forming y turns of an internal thread therein. The outer flange of the deformable-nut body is fixed to the main-nut body such that a relief space is formed between the deformable-nut body and the recess. A ratio of x:y is about 2:1.

Abstract: To threadedly engage a bolt and a female screw with each other, thereby making it possible to shave off a deposit on the inner surface of the female screw and to make it easy for a worker to sense the seating, there is provided a bolt including a shaft 2 and a head, wherein a first thread 11 is provided on a head side of the shaft, and at least one of a thread provided larger in diameter than the first thread and a thread provided wider than the first thread is provided on a tip end side of the shaft.

Abstract: A hardware fastener with a movable threaded element suspended within a cavity formed in a body. The movable threaded element has an internal surface with threads for cooperating with a threaded fastener. The movable threaded element is suspended in the cavity by the one or more spring-like members such that an area, A, of reduced stiffness is created in the cavity proximate the movable threaded element, thereby allowing the movable threaded element to move a predetermined distance within the cavity when torque is applied to the threaded fastener. The one or more spring-like members store elastic potential energy to prevent the loss of pretension of the threaded fastener that can be caused by heat or vibration. The invention also eliminates the need for a torque wrench when tightening the threaded fastener to a specified torque value.

Abstract: A snap joint for securing construction modules together on a modular construction site, the snap joint comprising a male member mounted on a first construction module and a female member mounted on a second construction module. The female member housing locking members, a tumbler and biasing members biasing the locking members against the tumbler. The male member having shaft engageable within the female member, through a base stop of the tumbler, along a trigger path in a manner to push the tumbler out of interference with the locking members, thereby freeing the locking members to transversally engage with the shaft.

Abstract: A self-punching functional element serves for the fastening to a workpiece and comprises a head part that has an abutment surface for introducing a punching force directed in a punching direction into the functional element and a rivet section that extends away from the head part in the punching direction and that comprises a free end that is provided with a first punching edge for punching a slug out of the workpiece. The functional element further comprises a functional section that has a punching pilot that is radially surrounded by the rivet section, that extends away from the head part in the punching direction, and that has a second punching edge for punching a hole into the slug. The second punching edge is set back with respect to the first punching edge in the punching direction.

Abstract: A screw includes a shank where a thread helix receiving groove winds around the shank and is disposed in the shank. A thread helix is disposed in the thread helix receiving groove where the thread helix has an expandable helix section. The shank has, at the thread helix receiving groove, a wedge flank for radially expanding the expandable helix section as the shank is moved relative to the expandable helix section. The expandable helix section has a helical back and a plurality of expansion fingers projecting axially from the helical back towards the wedge flank. The wedge flank of the thread helix receiving groove is configured for radially displacing the plurality of expansion fingers outwardly as the shank is moved relative to the plurality of expansion fingers.

Abstract: An attachment component which includes a body, the body having attachment means intended for allowing the attachment component to be assembled with a part including complementary attachment means, an insertion tip arranged at one end of the body so as to allow at least one portion of the body to be inserted through a part made of composite material, an axial abutment intended for halting the insertion of the body through the part made of composite material, and a breakable portion inserted between the insertion tip and said end of the body, the breakable portion being configured to break when a predetermined force is applied to the insertion tip with a view to detaching the insertion tip from the body.

Abstract: A spindle nut retainer is used with a spindle with a flat portion on its threaded end. The flat portion interrupts the threads on the threaded end. A washer with a mating flat portion is slidably mounted over the threaded end and a nut is removably threaded to the threaded end of the spindle against the washer to set the preload on bearings. The nut retainer overlays a plurality of the corners of the nut and engages the threaded portion of the spindle with tangs. A majority of the tangs are flexed or bent to remain in biased contact with the threads on the spindle. Some of the tangs are located over the flat portion and remain unbent. The tangs resist rotation of the nut by engagement with the flat portion where it meets the threads.

Abstract: To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion (7) is partially provided on a flank surface (131) of a screw thread ridge provided on a screw thread shaft main body (5), a screw thread ridge (13) in a section where the recessed portion (7) is formed is smaller than a regular screw thread ridge (3), and a ridge height (H12) in a distal end portion in a screwing direction is lower than a ridge height (H11) in a rear end portion in the screwing direction W.