Abstract: A washer and retained nut assembly has a washer with a retaining flange and a positioning cavity and a nut received in the washer. The nut has a shoulder received in the positioning cavity with a top surface of the shoulder engaging a lower surface of the retaining flange in a loose condition of the washer and nut. The nut further has an engagement surface contacting a receiving surface in the washer in an engaged position of the washer and nut. The nut further has a peripheral surface engaging a blocking surface in the washer with the nut and washer in a maximum offset angle orientation between the washer and nut in the engaged position.

Abstract: A shockproof nut kit includes an upper nut and a lower nut, in which an end surface of the upper nut is provided with a boss of elliptic cylinder; on the upper end surface of the elliptic cylinder at a longer planar extension side is provided an unfilled corner; in an end surface of the lower nut is concavely formed a cylindrical groove matching with the boss of elliptic cylinder, and in the assembly state, the boss of elliptic cylinder on the upper nut is in clearance fit with the cylindrical groove in the lower nut. The present invention avoids the slipping and displacement of nuts in the meshing process, and ensures the coaxiality of the upper and lower nuts during installation to the utmost. In terms of both safety and shockproof, the present invention achieves satisfactory results, the installation thereof is convenient and reliable, and the disassembly thereof is simple.

Abstract: This nut (1) comprises a nut main body (3) having a substantially cylindrical shape and constituted by a plurality of nut segments (3a), an outer cover (4), a restraining ring (5), an inner cover (6) comprising a restraining plate (6a) at one end portion of the inner cover (6) and serving to cover an outer circumference of the nut main body (3), and a ring-shaped spring (7) serving to bias the nut main body (3) to cause the nut main body (3) to expand radially. Protrusions (8) protruding in a circumferential direction are formed on an inner surface of the inner cover (6). Grooves (9) are formed on an outer surface of the nut main body. The protrusions (8) and the grooves (9) have slant surfaces (10) that contact each other on the same side in the axial direction.

Abstract: A fastener assembly comprises a first cylindrical member disposed within a second cylindrical member. One of the first and second cylindrical members is movable relative to the other in a first direction. The other one of the first and second cylindrical members is locked relative to the one in a second direction opposite to the first direction. A spring is operably attached to the first and second cylindrical members to urge one of the first and second cylindrical members in the first direction. A removable member is operably associated with the first and second cylindrical members to prevent one of the first and second cylindrical members from moving in the first direction prior to removing the removable member. The removable member is configured to be pulled out to allow one of the first and second cylindrical members to move in the first direction.

Abstract: A copper busbar has at least one stepped hole for fastening a cable shoe vi a screw connection. The stepped hole extends from a first surface of the copper busbar to a second surface of the copper busbar. The stepped hole has at least a first region, a second region and a third region, wherein the first region of the stepped hole adjoins the first surface, with a radius of the stepped hole being constant over the length of the second region with the second radius value. The third region adjoins the second surface, wherein the third region has at least at the second surface a radius with a third radius value which is less than the second radius value.

Abstract: A fastener assembly is provided. The fastener assembly includes a nut having an internally threaded portion and an annulus extending from the nut and configured for receiving the shank of an elongate fastener. A compression collar is configured for deflecting the annulus into at least one of fixed engagement with the shank or to impart a spring bias of the annulus against the compression collar upon tightening of the nut about a working surface.

Abstract: A fastener assembly comprises a beveled flush nut shaped to fit flush to a surface of the first piece within a countersunk portion of a hole, a threaded rod sized to engage the beveled flush nut and to extend through the hole in the first piece and an aligned hole in the second piece. A first nut is sized to threadedly engage the distal end of the threaded rod. A second nut is sized to threadedly engage the proximal end of the threaded rod when extended through an aligned opening in a third piece positioned over the second piece. The threaded engagement at the beveled flush nut can be overcome by tightening the second nut against the third piece, thereby securing the first piece, second piece and third piece together.

Abstract: A locknut comprising a metal nut including a threaded internal wall for engaging a threaded shaft; and a metal ring including an internal threaded wall defining a hole for engaging the threaded shaft. The ring comprised of a steel alloy. The threaded internal wall of the nut and the threaded internal wall of the ring being in general axial alignment when the ring is received by a bore of the nut. The ring has an elliptical configuration and is configured to distort to a circular configuration when the threaded shaft is engaged with the threaded internal wall of the nut and the threaded internal wall of the ring. The ring sized such that the stress in the ring when the ring is distorted to the generally circular configuration is less than the yield stress of the steel alloy. A thermal diffusion coating may be applied to the ring.

Abstract: A locking nut assembly including a bearing nut having a plurality of external serrations, a shaft nut having a plurality of external serrations, and a locking collar having a plurality of internal serrations. The bearing nut and the shaft nut are threadedly installed on a shaft assembly having an impeller, a bearing, and a spline adapter installed within the impeller. The plurality of serrations of the bearing nut align with the plurality of serrations of the shaft nut when they are installed on the impeller. The locking collar is installed on the bearing nut and the shaft nut so that the aligned plurality of serrations of the bearing nut and the plurality of serrations of the shaft nut engage the plurality of serrations of the locking collar. The locking collar is retained on the bearing nut and shaft nut by a retaining ring.

Abstract: A retaining nut comprises a nut body and a plurality of axially extending integrally formed deflectable locking fingers. The locking fingers have a frusto-conical surface opposite a threaded surface. The frusto-conical surface of the locking fingers are adapted to co-operate with a conical washer. Tightening the threaded nut on a threaded shaft against the washer causes the locking fingers to deflect radially towards the shaft. This provides a secure radial clamping of the nut on the shaft.

Abstract: A nut-type element (30) which is to be fixed in an interior (16) of a profiled workpiece (10) or similar and is provided with a longitudinal extension (a) that exceeds the width (n) of an insertion cross-section (14), particularly a joining device for connecting a first workpiece encompassing the interior to another workpiece by a screw or similar member whose shaft penetrates a hole of the workpiece and can be inserted into a recess of the metallic nut-type element located in the interior of the workpiece. The nut-type element (30) is embodied as a rectangularly expanded member which is penetrated approximately in the center by a threaded bore (42) in the direction of the longitudinal axis (Q). The threaded bore (42) extends into an annular molded edge (44) on the surface (40) of the element. The annular molded edge (44) protrudes from the surface.

Abstract: Disclosed is a taper bolt connection including a taper bolt received in a taper bush, a fastening nut and a washer, the taper bush having a continuous longitudinal slot, and the taper bush being capable of being spread open uniformly in the radial direction by means of a fastening nut screwable onto the taper bolt. Since the taper bolt and/or the taper bush have/has, at least in regions, an at least Teflon-containing coating, tribochemical processes between the taper bush wedge surface and the taper bolt wedge surface are largely avoided, so that the taper bolt connection can be released again without great effort even after a long period of connection. Furthermore disclosed is the use of the taper bolt connection for connecting a rudder unit to a carrying structure of a fuselage cell of an aircraft.

Abstract: A blocking nut ensemble for positional placement on a threaded shaft comprises a first internally threaded nut for threading on a shaft and including a first abutting face having intermediate inner and outer sidewalls depending therefrom and defining an annular groove in the first nut. A second internally threaded nut for threading on the shaft is axially aligned with the first nut. The second nut has a second abutting face and an annular locking flange extending therefrom wherein the annular locking flange is radially positioned in registration with the annular groove in the first nut. The annular flange of the first nut is received in the annular groove of the second nut when the first abutting face abuts the second abutting face thereby locking the first nut to the second nut.

Abstract: A nut member has first and second end faces and corners, and is formed with a plurality of protrusions, each of which is disposed at a respective corner and each of which has a lateral inner face that extends from the second end face, and a plurality of recesses, each of which is indented inwardly from a respective corner and each of which is defined by a recess-defining wall. The recess-defining wall has a lateral outer face that extends from the first end face. Each protrusion is received in and meshes with a respective recess, and the lateral outer face is in face-to-face contact with the lateral inner face when two of the nut bodies are stacked and are tensioned on a screw bolt.

Abstract: A lock structure, in which a nut member is screwed on a threaded portion formed in a shaft member in the axial direction and in which a fixed member fitted on the shaft member is thrust in the axial direction and fixed by the nut member. The lock structure comprises: a lock nut member screwed in the threaded portion on the opposite side of the fixed member across the nut member; a first threaded portion formed in a portion of the nut member other than the portion screwed on the threaded portion and having a lead angle different from that of the threaded portion; and a second threaded portion screwed in the first threaded portion and formed on the lock nut member.

Abstract: A locking apparatus includes an inner ring having a tapered outer shape and permitting a bolt of a fastener, with which construction elements are fastened, to pass therethrough, an outer plate formed with a tapered bore which receives the inner ring, a coil spring which urges the inner ring toward the outer plate, and a nut threadedly engaged with the bolt on the side close to an outer end of the coil spring. When an external force is applied to a construction so that the outer plate is displaced toward the nut, together with the construction element associated therewith, the outer plate applies a force, exerting in the direction axially of the bolt, to the inner ring. When receiving the force which has a component directed radially inwardly of the bolt, the inner ring is reduced in diameter to tighten the bolt, thereby preventing a further displacement of the outer plate and the construction element.

Abstract: This invention relates to a lock nut in which, when a double nut is fastened against a bolt, projections at the lock nut are deformed and crushed to be applied around the threaded part of the bolt and a frictional force is increased to improve an effect of looseness-prevention. A seat surface of a circumferential edge of the threaded hole 4 of the nut 2 is formed with a plurality of projections 5, 5, 5, the nut 2 is fastened against the fastening nut 7 already fastened against the bolt 6 acting as a member M to be fastened with its projections 5 being faced to the nut, the projections 5 deformed between seat surfaces 3, 8 of both nuts 2, 7 are applied around the threaded part between the threaded hole 4 of the nut 2 and the threaded part 9 of the bolt 6 so as to enable both nuts 2, 7 to be prevented from being loosened.

Abstract: A double nut thread friction locking safety cap device assembly consisting of several components, which are so constructed and assembled to resist the rotational effects of external forces. The resistance is achieved by the use and placement of opposing threads (right and left hand threads) with differing threads per inch and the containment of a compressed spring force and the use of the clearance between matching female and male threads. The outer cap nut and inner nut matching threads are axially aligned and the two are threaded together in opposite directions to compress a captured spring(s) or lock washer(s). This preloaded, three part assembly with matching inner female threads on both the outer cap nut and inner nut are axially aligned with each other is then rotated onto the threaded pipe end with matching male threads and is rotated until the pipe end is forced against a sealing surface of the cap nut or a sealing insert installed within the cap nut.

Abstract: A locking apparatus includes an inner ring having a tapered outer shape and permitting a bolt of a fastener, with which construction elements are fastened, to pass therethrough, an outer plate formed with a tapered bore which receives the inner ring, a coil spring which urges the inner ring toward the outer plate, and a nut threadedly engaged with the bolt on the side close to an outer end of the coil spring. When an external force is applied to a construction so that the outer plate is displaced toward the nut, together with the construction element associated therewith, the outer plate applies a force, exerting in the direction axially of the bolt, to the inner ring. When receiving the force which has a component directed radially inwardly of the bolt, the inner ring is reduced in diameter to tighten the bolt, thereby preventing a further displacement of the outer plate and the construction element.

Abstract: An apparatus for attaching an item to a floor comprising an anchor bolt, an anchor nut, and an annular collar comprising an upper annular outer ring, a lower annular ring, and an annular side wall connecting the rings, the annular collar held in place over the anchor nut below the floor by a retaining nut.

Abstract: A two-piece locking nut which includes a first nut (22) having an internal thread and a frusto-conical surface (32) at one end of said first nut, a second nut (28) having an internal thread of opposite hand as the thread of said first nut and a frusto-conical surface (36) at an end of said second nut which is complimentary to and positioned adjacent said frusto-conical surface of said first nut to prevent relative movement therebetween, and the second axial end (38) of the first nut opposite the frusto-conical surface (32) is positioned adjacent a workpiece to prevent axial displacement thereof.

Abstract: A trailer ball lock apparatus includes an externally threaded connecting bolt member which has a longitudinal axis and which includes a first longitudinal slot. A ball assembly includes an internally threaded, longitudinally oriented, connecting-bolt-receiving well and is adapted to receive the connecting bolt member. The ball assembly includes a top ball portion and a base portion. The ball portion includes a pin-receiving well portion located on a first side of the connecting-bolt-receiving well and includes a pin-receiving channel portion located on a second side of the connecting-bolt-receiving well. A locking pin assembly includes a lock pin portion adapted to extend through the pin-receiving channel portion into the pin-receiving well portion of the ball portion. The lock pin portion is placed in registration with the first longitudinal slot of the connecting bolt member for preventing rotation of the connecting bolt member within the ball assembly.

Abstract: A nut includes a first half having a short shank with an internal screw thread therethrough and an external screw thread thereon and a second half with a threaded bore. The internal screw thread of the first half has a first pitch while the external screw thread has a second screw pitch. The second screw pitch has constant first and second radii. The second radius is shorter than the first radius relative to an axis of the first half. The first screw pitch has constant third and fourth radii. The third radius is longer than the fourth radius relative to the axis of the first half. The third radius has a length at least equal to or longer than the second radius.

Abstract: A transistor mounting clamp assembly for ensuring reliable electrical connection of a power transistor electrical connector tab (typically the collector tab) to a metallized portion of an associated printed circuit board. The transistor mounting clamp assembly comprises a top and bottom clamp dimensioned for sandwiching therebetween the transistor tab. The clamp assembly uses a machine screw and associated Belleville washer for maintaining this urging relationship even when the components expand and contract. The bottom clamp preferably has a stepped region or other surface discontinuity for securing the connector tab thereto. The clamp assembly further comprises an extending tab which is secured to the top clamp and which has a second region for providing electrical connection to the metallized portion of the printed circuit board by soldering, or other means.

Abstract: The nut includes a first half having a short shank with an internal screw thread therethrough and an external screw thread on the short shank and a second half with a threaded bore. The internal thread has a first pitch and the external thread has a second screw pitch, the second and third screw pitches having different vertical lengths. The threaded bore includes a first section and a second section wider than the first section and the length of the short shank. The first section has a screw pitch equal to the first screw pitch and the second section has a third screw pitch slightly finer than that of the second screw pitch.

Abstract: An improved fastener is provided for mounting an object to a base, wherein the object has a threaded shaft extending through a hole in the base. The fastener includes a collar having a side wall, a first end with a threaded aperture for receipt on the shaft, and an open second end defining a cavity within the collar. A locknut received within the cavity of the collar has a first end with a threaded aperture therein for receipt on the shaft so as to cooperate with the collar in a double-nut arrangement. The second end of the locknut has a key recess therein for receiving a key socket or key wrench for tightening the locknut. The collar covers the locknut so as to prevent removal of the locknut and the collar without use of the key socket or key wrench.

Abstract: A locking nut is disclosed for locking engagement with an element such as a bolt, rod, stud or the like, the element having a cylindrical screw-threaded outer surface. The locking nut includes a main nut having a thread for engaging the cylindrical screw-threaded outer surface of the element. A cylindrical sleeve integrally contiguous to a first end of the main nut extends longitudinally therefrom. The sleeve has a cylindrically threaded interior surface for engagement with the outer surface of the element to permit longitudinal motion of the sleeve along the outer surface of the element. The cylindrical sleeve also has a cylindrically screw-threaded exterior surface, coaxial with the cylindrical sleeve interior surface, the threading on the sleeve exterior surface having a greater flank angle than the threading on the sleeve interior surface. A secondary nut threadedly engages the sleeve exterior surface, the secondary nut having a first end confronting the first end of the main nut.

Abstract: Provided is a double locknut assembly composed of a first nut and a second nut for fastening the first nut onto a bolt, wherein the above-mentioned first nut is formed therein with a bolt hole formed therein with a female screw thread threaded to engage with the screw thread of the bolt, the first nut having a projecting part, the outer peripheral surface of the projecting part having a truncated-conical surface on which a male screw thread is formed, the first nut being formed therein a slit so that the first nut is diametrically contractible, and the second nut is formed in the center section thereof with a bore having a truncated-conical surface formed therein with a female screw thread threaded to engage with the male screw thread on the outer peripheral surface of the projecting part of the first nut, thereby after the second nut is engaged with the first nut to a slight degree to form a one body unit, the first nut is engaged with a bolt, and thereafter the second nut is tightened to cause the first nut

Abstract: A lock nut arrangement formed of a first and second generally C-shaped nut member which are joined together in a manner allowing limited axial movement and free rotation relative to one another about the axis were two members were initially threaded to central openings. The nut assembly may be radially installed on a threaded lock and locked thereon by rotating the nut members relative to one another. A lock nut is manufactured by first forming a first and second nut blanks, axially pressing the nut blanks together, clamping the nut blanks and threading the central bore, rotating the nut blanks relative to one another a predetermined distance and slotting the nut blanks.

Abstract: A double nut comprising a locking nut body having a threaded axial bore, the locking nut body being formed with a recess defined by an annular internal surface and arranged in communication with the axial bore, a tightening nut body having a threaded axial bore coaxial with and corresponding in diameter to the axial bore of the locking nut body, the tightening nut body being formed with an annular axial projection insertable into the recess and having an external surface, at least one of the internal and external surfaces being conical with a diameter decreasing gradually in a direction of insertion of the axial projection into the recess, one of the recess and the axial projection being eccentric with both of the axial bores, and a connecting web adapted to break at a predetermined circumferential shearing force and extending radially to connect the external surface to the internal surface.

Abstract: The device has a screwthreaded collar 9 constituting a brake and trapped in a cavity 5 of a nut 2 with respect to which it is connected to rotate and axially movable in the cavity between an internally first position in which its screwthread 12 is in phase with the screwthread 3 of the nut and a second position in which the screwthreads are no longer in phase. The collar has splines 13 in its screwthread adapted to cooperate with splines in the screwthread 34 of a shaft 18 on which the nut is screwed so as to be immobilized in rotation on this shaft when the screwthreads of the collar 9 and the nut 2 are no longer in phase. For mounting the nut device, a tool is provided which comprises a hollow sleeve 20 defining a cavity adapted to receive the nut 2, an arrangement 29 for retaining the nut in a resilient manner and an arrangement 32 for maintaining the collar 9 in the first position at the inner end of the cavity 5 in opposition to the action of the second ring 15 when the nut is retained in the sleeve.

Abstract: A stem travel limiting apparatus provides a relatively tamper proof limit setting device for an adjustable valve stem. In a preferred embodiment, an internally threaded annular collar is positioned about an externally matingly threaded stem, the collar having a spaced gap in its annular body. A locking ring is positioned over the collar, and is of a size relative to the collar to develop sufficient force over the collar to partially close the gap and to force the threads of the stem and collar into distortion. The apparatus is positioned along the stem during assembly of a control valve to thereby provide a limit to a manually adjustable setting of the control valve.

Abstract: A multifaceted nut casing has a wedge fit threaded jam nut for compressing into engagement on the threads of a bolt as the nut is tightened into a locked position.

Abstract: The present invention includes an attachment apparatus comprising a rotation limiting member adapted to be threaded onto a threaded member; and a preload nut adapted to be threaded onto the threaded member. The rotation limiting member comprises a plurality of pins, and the preload nut comprises a plurality of slots, preferably wherein the plurality of pins and the plurality of slots are the same in number, which is preferably three. The plurality of pins of the rotation limiting member are filled into a corresponding plurality of slots of the preload nut to form a rotatable unit adapted to be threaded onto the threaded member. In use, the rotatable unit is threaded onto the threaded member. The present invention thus provides a unitized removable device for holes, including holes other than circular in shape, which have an established depth before an end of, or before an enlargement of the hole.