Abstract: A fastener is provided having a cylindrical shaft with a generally constant diameter located between a head and a tapered point. The fastener has a thread integrally extending from the shaft and extending along a portion of a length thereof that terminates at an end of the shaft proximate the head with a back-out discontinuity. At least one ring integrally extends from the shaft in an area of the shaft between the back-out discontinuity and the head. The at least one ring has an outside diameter that is less than an outside diameter of the thread.

Abstract: A lock washer for releasably locking a fastener to an object is provided. The washer includes a body defining a bore configured for alignment with a bore disposed in the object. The bores are configured to receive a shank of the fastener and are disposed about a center axis along which the fastener extends. The washer further includes one or more fingers each having a first end coupled to the body and a second end configured to selectively engage a flat on either a head of the fastener or a nut. The finger is movable between a disengaged position wherein the second end of the finger is configured for disengagement from the flat and an engaged position wherein the second end of the finger is configured for engagement with the flat. The finger is biased towards the engaged position.

Abstract: A friction-welded ground assembly that includes an alloy substrate with a clearance hole; an aluminum alloy weld nut having a bolt bore and an outer wall; and a grounding bolt. The bore is located substantially within the clearance hole and a portion of the outer wall is joined to the substrate at a friction-welded attachment. Further, the bolt is threaded within the bore. In addition, a method for making a ground includes the steps: rotating an aluminum alloy weld nut having an outer wall at a predetermined speed; lowering the outer wall of the rotating nut into contact with an aluminum alloy substrate to generate a frictional force for a friction time; arresting the rotation of the nut; and applying an axial forging force to the outer wall and the substrate for a forging time.

Abstract: Provided is a screw fastener provided with the function of a torque limiter which allows a high limit value to be set for the fastening torque without increasing the size thereof or the spring force of the spring member, and is easy to assemble and service. A multiple plate torque limiter is formed by a plurality of drive disk members (50) and a plurality of driven disk members (52) between a first member (10) and a second member (30), and the first member (10) and the second member (30) are detachably joined to each other by a retaining screw (22).

Abstract: A threaded fastener hole repair apparatus for repairing a stripped target screw hole so that the desired screw can once again be secured therein comprises an elongated, conical fastener sleeve having a threaded exterior surface and a substantially hollow, conical interior. The elongated fastener sleeve is made up of ten discrete breakaway portions, defined as a single proximal end section and nine sleeve sections, with each separated by a circumferential score in the fastener sleeve, thereby allowing the fastener sleeve to be resized by snapping off breakaway portions a desired point. The substantially hollow, conical interior of the fastener sleeve includes four elongated flaps which run in a narrowing manner along the wall of the conical interior in the fastener sleeve, providing an additional surface inside the conical interior of the fastener sleeve to mesh with the threads of the screw being inserted into the fastener sleeve.

Abstract: A rivet stud bolt is disclosed. A rivet stud bolt for mounting an element to at least one panel includes a bolt portion to which the panel is assembled, a flange integrally formed to an end of the bolt portion, and a rivet portion integrally connected to the flange, in which at least two slits are formed, and the rivet portion is plastically deformed and connected to the panel.

Abstract: The invention relates to an assembly for a turbine engine, the assembly comprising a tubular shaft (60), a nut (64) screwed onto an end portion of said tubular shaft (60), and a locking member (86) for locking the nut (64) on the shaft (60), said member (86) including means (90, 78) for coupling in rotation with the nut (64) and means (92, 68) for coupling in rotation with the shaft (60), said member (86) being movable between a position for coupling the nut (64) in rotation relative to the shaft (60), and a position for releasing the nut (64) relative to the shaft (60). The nut (64) includes a housing (72) in which said member (86) is suitable for being held when in its release position.

Abstract: A blind rivet arrangement (1) is described, comprising multiple rivet bodies (3, 3a, 3b) arranged in succession on a mandrel (2), the mandrel (2) having a mandrel head (8) with an outside diameter which is greater than an inside diameter of the rivet bodies (3, 3a, 3b). The aim is to provide an inexpensive way to produce a blind rivet arrangement that works effectively. To this end the mandrel (2) and the mandrel head (8) are designed as parts that are produced separately and joined together.

Abstract: A two-way fastener includes a first member threaded for being screwed into a first workpiece; a polygonal wall for receiving a tool to screw the first member into the first workpiece, the polygonal wall located at a base end of the first member; and a second member extending in an opposite fastening direction from the first member, the second member configured to be fastened to a second workpiece. A fastening method includes enabling the threading of a first member of a fastener into a first workpiece; and enabling the threading of a second workpiece to a second member extending outwardly from the first member and the first workpiece.

Abstract: A mechanical fastener assembly is provided for joining two or more workpieces. The assembly includes a mechanical fastener and a slotted collar. The mechanical fastener has a shaft received within aligned bores of the workpieces, while the slotted collar surrounds at least a portion of the shaft and is also received within the aligned bores. Inserting and advancing the slotted collar into the aligned bores causes the slot of the slotted collar to at least partially close, thereby causing an inner surface of the slotted collar to engage at least a portion of the shaft of the mechanical fastener and an outer surface of the slotted collar to engage at least a portion of the aligned bores of the two workpieces. Such a mechanical fastener assembly can effectively transform a bolted joint into a stronger shear joint.

Abstract: A retainer assembly for retaining a panel to a component. The retainer assembly includes a base defining a bore for receiving a screw. A pair of front and back support members each have a first section connected to the base, and a second section that overlies the bore for flexing outwardly in response to being engaged by the screw. A front and back primary retention member each extend outwardly from the front and back support members for holding the retainer assembly relative to the panel. A pair of front and back secondary retention members each extend outwardly from the first section of the front and back support members. The front and back secondary retention members terminate closer to the base than the front and back primary retention members to establish an interference fit between the retainer assembly and the panel prior to the screw being driven through the retainer assembly.

Abstract: The present invention relates to an insert bolt, and more particularly, to an insert bolt having an anti-turn function, in which one-way teeth are formed on a bottom surface of a bolt head constituting the insert bolt, such that a bolt shaft can turn only in a clockwise direction when casting concrete, thereby preventing the bolt shaft from loosening from a connecting rod.

Abstract: A guide pin for a connector assembly includes a guide pin body extending along a pin axis. The guide pin body has a stem extending between a root and a tip. The root has threads configured to be threadably coupled to a support frame of the connector assembly and the tip has a lead-in to guide the guide pin body into a mounting block. The stem has slots extending parallel to the pin axis from the tip to an intermediate position along the guide pin body remote from the tip. The slots are configured to receive ribs of a driver tool used to rotate the guide pin body to threadably couple the root to the support frame.

Abstract: The object of the invention is a unit fixing insulation to the wall intended both for styrofoam insulation as well as for mineral wool insulation. A unit fixing insulation to a wall, according to the invention, is formed with the locating sleeve on which a pressing sleeve is slidably mounted, constituting an integral unit with a circular pressing plate provided with slitting teeth arranged along the circumference of a circular plate and the locating sleeve is ended at one end with an expansion zone and at the other end with a circular plate, whereas the locating sleeve houses an expansion element, preferably in the form of a screw. A unit characterised in that the expansion element has a head embedded permanently in the sleeve with an outer thread and a polygonal hole is provided within the sleeve, whereas a pressing plate is ended with a circular flange which houses the insulating cap, while the teeth of the pressing plate have side and front sharp edges.

Abstract: An anchoring sleeve for anchoring a fastening element in a bore hole of a component by a hardenable compound is disclosed. The anchoring sleeve has a sleeve-like base body with a first end, with a second end, as well as with several axially successive extension sections arranged between the ends which are each configured to be cone-like and their diameter respectively increases in the direction of the first end.

Abstract: A screw plate panel arrangement for the connection of articles, such as hinges, to a moveable panel. The screw plate is connected to the panel in a single one step molding process that mechanically fastens and imbeds the screw plate into the finished panel.

Abstract: The object of the invention is a unit fixing insulation to the wall intended both for styrofoam insulation as well as for mineral wool insulation. A unit fixing insulation to a wall, according to the invention, is formed with the locating sleeve which is ended at one end with an expansion zone, and with a circular plate at the other end, whereas the locating sleeve houses an expansion element, preferably in the form of a screw. A unit characterized in that the expansion element has a head embedded permanently in the sleeve with an outer thread and a polygonal hole is provided within the sleeve, and the locating sleeve has a diameter with gradation, wherein a larger diameter is from the inlet side.

Abstract: A detachable holder includes a base and a body. The body is integrally molded with the base and projected from the base. The body is configured to be inserted in a hole formed in a plate member. When the body is inserted in the hole, the body holds the base on the plate member. In addition, the body locates the base relative to the plate member. In addition, the base is detachable from the plate member from one side of the plate member. In addition, the base is detachable from the plate member from an other side of the plate member opposite of the one side.

Abstract: An apparatus comprises a metal washer having an outer circumference, a plurality of cavities formed within the washer, wherein each cavity has an opening that is flush with the outer circumference, an indicator material comprising an inspection lacquer within at least one of the cavities, and a membrane along the outer circumference sealing the inspection lacquer within the cavity.

Abstract: A threaded fastener includes a head, a threaded shank extending from a bottom face of the head along a longitudinal axis of the fastener, and an annular flange oriented transverse to the longitudinal axis and surrounding the bottom face of the head. A surface has a receiving hole in which the shank of the threaded fastener is disposed with the bottom face of the head contacting the surface. The surface further has a crimping recess spaced apart from the receiving hole. A portion of the annular flange overlaps and is deformed into the crimping recess. The fastener may be a screw or bolt. In the case of a bolt, a nut engages the distal end of the threaded shank. The nut also includes an annular flange that is deformed into a crimping recess on a surface proximate to the nut.