Abstract: Fastener assemblies and nut plate assemblies include a plate member, a shell member and a floating nut disposed within the shell member and defining a bore configured to receive a threaded fastener. The fastener assemblies and nut plate assemblies also include at least one magnetic component disposed within the shell member and configured to switch the nut plate assembly between a locked configuration and an unlocked configuration.

Abstract: T-slot interconnects that include a body portion and two orthogonally elongated interlock tabs positioned on opposed sides of the body portion are used for building T-bar structures, including grow-light canopies. In operation, the elongated interlock tabs are placed into T-channels of the T-slot bars and/or T-slot light bars. The T-slot interconnects are then rotated to secure the elongated interlock tabs within the T-channels of the T-slot bars and/or T-slot light bars and, thereby, secure the T-slot bars and/or T-slot light bars together through the T-slot interconnects.

Abstract: A connector system and method comprising a coupling with 3 walls defining a cavity. Disposed on the first side wall and second side wall are lips protruding into the cavity, such that a grooved board inserted into the cavity is in contact with the lips and back wall. Disposed on the walls are mounting holes, such that other apparatuses may be mounted to the mounting holes. The couplings may be mounted on other identical couplings or on couplings of different heights.

Abstract: A channel having a base portion, an open central region, and an integral pair of sidewalls. The integral pair of sidewalls having an upper portion of each sidewall that includes an inward-facing downturned internal flange and an outward-facing upturned external flange.

Abstract: Captive fastener systems and structural assemblies having captive fastener systems are described. The captive fastener systems include a captive fastener assembly having a sleeve and a captive fastener arranged within the sleeve, a mounting assembly having a bushing and a mounting fastener arranged to pass through the bushing, and a joining body having a mounting aperture, wherein the sleeve is attached to the joining body and the bushing and the mounting fastener are configured to pass through the mounting aperture. The mounting assembly is configured to provide a first degree of movement of the captive fastener system and the captive fastener assembly is configured to provide a second degree of movement of the captive fastener system.

Abstract: A fastener comprises a housing, a socket, a pintle and a locking feature. The housing includes a shaft, a central bore that extends axially at least partially through the housing and a ball lock aperture extending from the bore. The socket extends into the housing adjacent to the first end face, and is configured such that rotation of the first socket rotates the fastener. The pintle is positioned within the bore and includes an actuation end and a rod that extends axially from the actuation end. The rod includes a ball transitioning surface and a ball locking surface. The pintle is moveable axially within the bore between a designated lock position where the ball locking surface of the pintle is aligned in register with each ball lock aperture, and a designated unlocked position where the ball lock surface of the pintle is moved axially away from each ball lock aperture.

Abstract: The present concept a work piece mounting system for connecting two work elements together, includes a main body with radially oriented horizontal upper and lower jaw passageways for receiving therein upper and lower jaws respectively. The radially oriented horizontal upper and lower jaw passageways, are adapted to receive the jaws slid-ably therein, wherein the cross section of the jaws and passageways configured such that the jaws are restricted from rotating within the passageways. A vertical cavity extending vertically and centrally through the main body, along a z-axis, is for receiving a grooved end of a lower fixation element upwardly therein and a grooved end of an upper fixation element downwardly therein, wherein the other threaded end of the fixation elements are configured for detachably connecting to a working element.

Abstract: A through bolted connection hardware includes a bolt that has a partially threaded shaft and a head. At least one nut connector defines a shaft hole and a coaxial head hole. The shaft hole is sized to receive the shaft of the bolt and not to allow the head to fit through the shaft hole, and the head hole is sized to receive the head. The hardware also includes a tube that has an axially extending threaded bore that is configured to matingly receive the shaft at a first end of the threaded bore.

Abstract: A device for captivating a variety of fasteners relative to a first member. A captivator includes a body adapted to be secured to the first member and a retainer received within the body and having a surface engaging a captured fastener. Together the body and retainer maintain the captivated fastener in place relative to the first member. A two-part base includes a snap base and base retainer together secured on a panel. The snap base may include one or more grooves for engaging one or more protrusions on the base retainer. In some embodiments a fastener retainer is not required as the base retainer functions to secure the fastener to the assembly.

Abstract: A spinal construct comprising a first portion. A second portion defines a longitudinal axis and is configured to penetrate tissue. A tether is fastened with the first portion such that a spinal implant connected with the tether is movable to a plurality of orientations relative to the longitudinal axis. Systems and methods are disclosed.

Abstract: A floating fastener mounting structure includes a mounting socket having an annular bottom stop flange and mounting portion extending around a bottom end of a center hole thereof, a locking member including a shank inserted through center hole, a mounting head located at the top end of shank and suspending above center hole and an expanded locking end tip located at the bottom end of shank and movable in and out of the bottom end of center hole, a spring member mounted around shank and stopped between mounting socket and locking member, a cap member fastened to mounting head and having an outer diameter not larger than outer diameter of annular bottom stop flange and defining an accommodation chamber for accommodating a part of the mounting socket and a part of the mounting head.

Abstract: A device for captivating a variety of fasteners relative to a first member. A captivator includes a body adapted to be secured to the first member and a retainer received within the body and having a surface engaging a captured fastener. Together the body and retainer maintain the captivated fastener in place relative to the first member. Keyway surfaces can be provided upon the body or retainer or both and an external or internal key can engage the keyway surfaces to selectively lock the body and retainer together, such as during installation or replacement of the captured fastener. Upon removal of the key, the retainer is free to rotate and translate relative to the body. A two-part base includes a snap base and base retainer together secured on a panel. The snap base may include one or more grooves for engaging one or more protrusions on the base retainer. In some embodiments a fastener retainer is not required as the base retainer functions to secure the fastener to the assembly.

Abstract: A screw element for fastening an article to a counter-piece, including a first part rotatable by hand or with a tool and a second part provided with a thread, wherein the first part and the second part can be rotated relative to one another about a longitudinal axis of the screw element, but can be held axially to one another via a connection point, as well as being composed of an installation limiting a torque transferred from the first part to the second part, the installation having at least one ramp part which can rotate with the first part or with the second part in a direction in parallel to the longitudinal axis of the screw element with respect to a spring bias and cooperating with ratchet noses of the respective other one of the first part or the second part.

Abstract: A fastener useable with a peripheral component interconnect riser cage is provided herein. The fastener includes a body, a rotation limiter, and a housing. The body includes an engagement end that engages with a receptacle on a sub-pan and a cap end that positions the body. The rotation limiter includes a receiving member and a positioning member. The receiving member couples with the body. The positioning member extends from the rotation limiter to limit rotation of the body coupled thereto. The housing receives the rotation limiter and the body. The housing includes a rotation aperture that receives a positioning member such that the rotation limiter is rotatable along the rotation aperture. The housing further includes a lateral aperture to receive the body such that the body is inserted through the lateral aperture and coupled to the rotation limiter.

Abstract: A tolerance compensation member having at least two support bodies (20, 22) at least one of which has a helically extending support surface with which the support bodies are engaged one against the other such that an axial dimension of the tolerance compensation member (12) may be adjusted by rotating the support bodies (20, 22) relative to one another, wherein at least one of the support bodies is a helical spring (20), and the support body (22) that is engaged therewith has a lug (26) that engages between the turns of the helical spring (20).

Abstract: A supporting apparatus, configured to support a heat dissipating device, includes a bracket, two adjusting structures, and two mounting portions. Each of the two mounting portions defines a mounting hole. Each of the two adjusting structures is engaged in each of the mounting holes and includes an adjusting member and an installation member engaged with the adjusting member. Each of the adjusting members defines a through hole. The two adjusting members are rotatable relative to the two mounting portions from a first position to a second position. When the adjusting members are in the first position, a first line is running through the two through holes. When the adjusting members are in the second position, a second line is running through the two through holes, and a length of the first line is less than a length of the second line.

Abstract: A connector includes a support (14) made of synthetic resin and constituting a first housing (10), a bolt (20) rotatably penetrating through the support (14), a seal ring (29) mounted between the supporting portion (14) and a head (22) of a bolt (20), a metal nut (36) embedded in the front surface of a second housing (30) and connecting the two housings (10, 30) by being threadably engaged with the bolt (20), and a stopper for preventing a threaded movement of the bolt (20) by bringing the metal parts into contact.

Abstract: A connector includes a support (14) made of synthetic resin and constituting a first housing (10), a bolt (20) rotatably penetrating through the support (14), a seal ring (29) mounted between the supporting portion (14) and a head (22) of a bolt (20), a metal nut (36) embedded in the front surface of a second housing (30) and connecting the two housings (10, 30) by being threadably engaged with the bolt (20), and a stopper for preventing a threaded movement of the bolt (20) by bringing the metal parts into contact.

Abstract: A captive screw formed of a lock screw, a cap-shaped knob, a spring member and a mounting barrel and mountable in a mounting through hole of a first panel frame and fastenable to a mounting screw hole of a second panel frame to detachably secure the second panel frame to the first panel frame is disclosed. The lock screw has a top protrusion raised from the top wall of the head thereof and a tool groove formed in the top protrusion. The cap-shaped knob is molded on the head of the lock screw by insert molding and defining an endless isolation groove on the top wall of the head of the lock screw around the periphery of the top protrusion that facilitates attachment of a hand tool to the top protrusion of the lock screw for enabling the lock screw to be driven by the user with the hand tool into the mounting screw hole of the second panel frame conveniently with less effort.

Abstract: A bright-surface structure with nut suspended in midair is provided. The bright-surface structure comprises a main body, at least one nut and at least one holder. The main body has a coupling region and at least one appearance surface with smooth and bright face. The nut is disposed at the side of the coupling region. The holder is disposed between said nut and said main body so that said nut can be firmly disposed on said coupling region by means of said holder. Whereby a screw will not approach said main body or said coupling region so that said appearance surface will not deform or wrinkle when said screw is locked into said nut.

Abstract: A heat sink anchoring apparatus includes a bushing, an elastic element and an insertion rod. The bushing has a position end and a sleeve. The position end is latched on the baseboard to hold the bushing on the baseboard in an upright manner. The sleeve has an axle hole extended towards the position end and at least one track with a retaining notch formed on the inner edge of the axle hole. The elastic element and the anchoring leg are coupled on the sleeve at the outer edge. The insertion rod has at least one sliding portion to enter the track and a force applying portion at the other end. The force applying portion is compressible to compress the elastic element to form a retaining elastic force on the anchoring leg. The sliding portion is movable along the track and latchable on the retaining notch for positioning.

Abstract: A method for making a barrel for plate member fastener and installing the barrel in a first metal plate member for enabling the plate member fastener to affix the first metal plate member to a second metal plate member is disclosed to include the step of machining a metal base material into a barrel having a bottom bonding flange and a bottom extension tube around a bottom opening thereof and then affixing a solder mask to the bottom extension tube around the bottom opening and the step of fitting the bottom extension tube of the barrel into a mounting through hole of the first metal plate and abutting the bottom bonding flange of the barrel against a solder paste at the top wall of the first metal plate member and then applying a reflow soldering process to bond the bottom bonding flange of the barrel to the top wall of the first metal plate member.

Abstract: A retaining cam (20) for a rotatable fastener for connecting components (16, 17) is provided. The retaining cam (20) has a housing (22) pivotally supported on a base plate (24), by which the retaining cam (20) can be fixedly connected to one (17) of the components (16, 17). A screw (30) is secured rotationally fixed in the housing (22). A fastener bolt (40) rotatably connected to another (16) of the components (16, 17) can be screwed onto the screw (30). Spring elements are associated with the screw (30) for generating an elastic pretension for securing the fastener bolt (40) against rotation. The housing (22) is pivotally supported on the base plate (24) by a spherical washer (50). An angle deviation between the center axes of the retaining cam (20) and the fastener bolt (40) can be compensated for by pivoting the retaining cam on the spherical washer (50) while maintaining full-surface contact of the retaining cam (20).

Abstract: A locking system to more accurately secure the foot pedal tension spring to the desired tension every time a tension adjustment is necessary. An adjustment screw is interconnected with the tension spring for adjusting the tension of the spring. A spring tension adjustment nut is threaded onto the adjustment screw. In accordance with the invention, a locking system is provided for locking the adjustment screw at one of a plurality of selected adjustment positions relative to the support and the foot pedal assembly in general. The selected adjustment positions are radially disposed about the central axis of rotation of said adjustment screw so that the adjustment screw may be locked into one of the selected adjustment positions relative to the support. With this locking system, the user may carefully select from a plurality of highly sensitive adjustment positions.

Abstract: A standoff attachment for bonded fixation to a substrate includes a standoff post with internal nut for engaging a mating fastener used to mount a support element such as a line clamp substantially at a distal end thereof. The standoff post extends from an enlarged bond-on base and defines a hollow slotted channel of noncircular cross-section which terminates at the distal end in an in-turned flange defining an open fastener-receiving port. The nut includes a keyed rib sized and shaped for axial slide-fit reception into the slotted channel at an inboard side of the distal end flange, wherein this rib mates with the slotted channel shape to preclude substantial nut rotation. An elongated slotted plug is secured within the slotted channel to retain the nut, preferably with a minor degree of axial freedom, axially between the plug and the distal end flange.

Abstract: Light-weight fastener assemblies, spacers, standoff and other fastener components include one or more non-metal parts. A non-metal spacer can support a fastener element or fastener support so they fastener and a payload can be supported spaced apart from a surface such as an aircraft surface.

Abstract: A simplified captive panel fastener including a head, shank, a threaded outer end, and a centrally threaded opening at the outer end. Longitudinal slots extend along the outer end of the fastener to receive a retention washer with inwardly extending prongs. The method of mounting the fastener to its desired location and locking a retention washer and fastener in place is easily performed by employing a tool which disposes the threaded mating part, for example, a screw or bolt, into the central threaded opening of the outer end of the fastener. The head of the screw or bolt has radial extent sufficient to block the slots and prevent loss of the retention washer. Only a common screwdriver is used to mount the retention screw or bolt in the end of the fastener.

Abstract: A closure device for connecting two members which for example have at least in regions the form of plates, includes a closure pin which can be secured, if necessary, loss-proof on the first member and a receiving element which can be disposed on the back side of the second member. The closure pin has a head section for bracing on the front side of the first member and a shaft section which can be guided through an opening of a guidance sleeve disposed in an opening of the first member. The shaft section has threads cooperating with counterthreads of a connecting section of the receiving element. The guidance sleeve on the end associated with the heat section of the closure pin includes a radially expanded head section and at the end facing away from the head section of the closure pin a radially expandible collar-like securing section which is bent round-about outwardly.

Abstract: High pressure jackscrew connectors for removably attaching a first component to a second component having an internally threaded member. One preferred embodiment described includes a panel mount member which is attached to the first component to be joined. When attached to the first component, the panel mount member retains an internally threaded ejector member. A pressure inserter member having a longitudinally extending externally threaded portion engages with the internal threads of the ejector member and the internal threaded member of the second component to pull the ejector member towards the pressure inserter member and push the first component towards the second component upon rotation of the pressure inserter member.

Abstract: A retention subassembly for FI threaded fastener assemblies, which retention subassembly is operative to limit the torque, and consequently, the loads acting on the FI threaded fastener assembly and/or on the components coupled thereby. The retention subassembly includes a cage assembly and a Floating Threaded (FT) insert disposed within an internal chamber of the cage assembly. Furthermore, the FT insert includes a threaded bore for accepting a threaded fastener of the FI threaded fastener assembly. The retention subassembly further comprises a first torque reacting means for reacting torque when the threaded fastener is caused to engage the threaded bore, a means for disengaging the first torque reacting means in response to a threshold magnitude of torque, and a second torque reacting means for reacting torque when the threaded fastener is caused to disengage the threaded bore.

Abstract: A low profile latch mechanism for an access panel that minimizes external structural discontinuities while concomitantly providing external access to engage and/or disengage the latch mechanism for closing and/or opening of the access panel. The latch mechanism includes an insert member mounted in rotatable combination with the internal surface of the access panel, a captured floating nut mounted in nonrotatable combination with the internal surface of a frame segment, a safety lock member mounted for axial displacement within the captured floating nut, and a removable key member. The removable key member is insertable through an access aperture in the access panel to engage the insert member for rotation thereof to threadingly engage the captured floating nut to close the access panel. The safety lock member is biased to engage the insert member to lock the low profile latch mechanism in the fully engaged state upon removal of the key member.

Abstract: An alignment tolerant fastening system for interconnecting first and second members having first and second bores therethrough, respectively, is disclosed. The fastening system may include a fastening member having a shank portion which is receivable within the bores of the first and second members, a nut member for engaging at least a distal portion of the fastener shank portion proximate the second member, and first and second washers, at least one of which includes a plurality of serrations, positionable within the first bore of the first member, about the shank portion of the fastener. More specifically, for purposes of accommodating a misalignment between the first and second bores, the inner wall of the first washer is slidably engagable with the fastener shank portion and the outer wall of the second washer is slidably engagable or interconnectable with the first bore wall which defines the first bore of the first member.

Abstract: A fastener assembly for joining a panel to a sub-panel comprising a receptacle assembly having a threaded stud secured to the undersurface of the sub-panel. The assembly includes a bolt having an enlarged head at one end and a nose at the other end. The panel has a countersunk opening aligned with an opening in the sub-panel. The bolt is threaded for threaded engagement to the stud. The body of the bolt includes a plurality of spaced grooves extending longitudinally along the outer surface of the bolt body. A retainer surrounds the bolt body having spaced ears riding in the grooves and a stop in a groove adjacent the nose of the bolt stops the downward movement of the retainer. A cup member surrounds the retainer thereby protecting the retainer during its movement along the grooves.

Abstract: A fastener for joining together two components includes a closure pin permanently securable to a first component and a receptacle disposed on the far side of a second component. The closure pin has a head section adapted for support in an outer side of the first component and a shank section extending through a hole in the first component and a hole in the second component aligned with the hole in the first component and having a thread mating with an internal thread in a fastening section of the receptacle. The peripheral surface of the closure pin has a radial taper zone with a stop face radially extended on the opposite side from the head section and formed by a rim stop. The stop face engages with a safety element to prevent complete extraction of the closure pin from the hole in the first component. The safety element is disposed in a groove open to the hole in the first component.

Abstract: The present invention discloses an automatic locking device for effecting the locking engagement of a lock stud within a stud receiving fixture adapted for locking two complimentary structures together formed by a lock mechanism of the type provided with a lock stud mounted on one of the complimentary structures, the lock stud having a predetermined diametric dimension and threaded along the exposed end thereof, the outer exposed end being terminating in a nose portion which has a diametric dimension slightly in excess of the diametric dimension of the lock stud. A stud receiving locking means is mounted on the opposed complimentary structure and in substantial linear alignment with the lock mechanism. The stud receiving locking means is provided with at least two movable members being normally biasingly urged together and having an apreture formed by the members diametrically sized to be complimentary with the diametric dimension of the lock stud when the members are in the rest position.

Abstract: A self locking panel fastener comprising a receptacle connected to one of the two panels being secured together, the receptacle having an internally threaded nut portion, an externally threaded stud having a head portion extendible through the apertures of the panels, a shaped end portion and a bore formed therein; a first locking member within said receptacle having a shaped aperture and sized to receive the shaped end portion of the stud to drivingly connect the first locking member and the stud; a second locking member mounted within the receptacle for generally axial movement relative to the nut portion; a spring member for forcing the second locking member into engagement with the first locking member to form a locking connection between the stud and the second locking member; and a member for driving the second locking member generally axially relative to the first locking member against the force of the spring to break the locking connection and to allow counterrotation of the stud relative to the nut

Abstract: A panel fastener having a bolt and a floating grommet assembly which assembly includes a grommet fixedly mounted in a hole in a panel and a spacer spaced from the grommet and swaged thereagainst and also against the bolt of the panel fastener. In this matter, the bolt may be held away from the panel, then pushed inwardly into the hole in the panel. The spacing between the grommet and the spacer allows for play between the bolt and the panel to compensate for misalignment between the bolt of the panel fastener and the receptacle to which it is to be fastened.

Abstract: A nutplate assembly (10), for attaching to a structure (11), is comprised of a nut element (14), an insert (16), a snap ring (18), and a cover plate (20). Installation of the assembly (10) does not deform the attaching structure (11) and the insert (16) can be replaced by accessing only one side of the structure (11).

Abstract: A non-metallic acoustic and thermal isolating fastener mount comprising a housing 20, a threaded locking plate 30, an elastic diaphragm 40, and an unthreaded spacer 50 is disclosed. The housing 20 includes a cavity 24 and a pair of outwardly extending arms 22. Mounted in the cavity 24 is the treaded locking plate 30. The treaded locking plate 30 is positioned such that a pair of posts 34 lie between a pair of outwardly extending arms 29 of an access opening 26 formed in the top of the housing 20. The elastic diaphragm surrounds the access opening and includes apertures through which a threaded hub 32 and the posts 34 extend. The unthreaded spacer 50 includes a hub having outer diameter that allows it to be press-fit around the hub 32 of the threaded locking plate 30. The housing 20, threaded locking plate 30, and spacer 50 are formed of a high-strength, high-temperature plastic, preferably a fiber reinforced polyamide-imide resin, such as Torlon.TM..

Abstract: A captive panel fastener includes a head, a shank, internal threads, and external, longitudinally extending slots extending from near the head to near the shank's outer end. A washer is provided and the washer has inwardly extending prongs that fit into the longitudinally extending slots when the washer is slipped onto the fastener. The outer end of the shank, past the ends of the slots, has a thin walled portion which, after the washer is in place, is deformed with a forming tool so that the wall is pushed outward. The outwardly deformed end wall blocks the ends of the longitudinally extending slots, thereby holding the washer onto the fastener. The retaining washer captures the fastener on the panel or other surface through which the fastener has been extended. A small washer may be utilized between the outer ends of the slots and the deformed end walls to block the ends of the slots, thereby allowing the end walls to indirectly hold the larger retention washer.

Abstract: The two bearing brackets (4, 5) of a small motor are clamped by means of stud screws (2, 3) against the respective end face of the motor casing (1). The stud screws (2, 3) extend axially by free bolt ends (21, 31) beyond one bearing bracket (5). Onto these free bolt ends (21, 31), a holding frame for the small motor is placed and is fixed against the bearing bracket (5) by means of a holding nut to be screwed onto the free bolt ends (21, 31). The screw heads (22, 23) provided at the stud screw ends are held positively in the one bearing bracket (4) to prevent their rotation with respect to the casing and onto the other, axially projecting free bolt end (21, 31) an attachment nut (23, 33) is screwed applying firmly against the other bearing bracket (5).

Abstract: An anchor nut-cage fixing system is provided for positioning on a metal sheet from one of the faces of this metal sheet with a view to receiving bolts presented from this same face and comprising: a nut (1) with wings adapted for cooperating with an elongate hole (3) formed in the metal sheet (4); a plastic material cage (5) split by windows (6) and connected to an external collar (7). This collar is covered by a flat metal cap (9) perforated so as to let the bolts pass therethrough and having axially bent flanges (12) whose axial height is equal to or slightly less than the thickness of the collar, one at least of these flanges being bent to a little more than 90.degree. so as to imprison the collar.

Abstract: A fastener apparatus for joining together a plurality of plates, including an internally-threaded pin adapted to be guided through aligned openings in the plates and a generally cup-shaped accommodating element that can be tightened with the pin via a threaded bolt mounted centrally therein. The accommodating element carries one or more springs for yieldably resisting entry of the pin and further carries two locking washers accommodated on the threaded bolt, for preventing an unintended loosening of the pin out of its tightened position. The locking washer that faces the pin is rotatably guided and axially displacable up to an external stop of the accommodating element, and the locking washer that faces away from the pin is rotation-fast but guided in displacable fashion within the accommodating element, axially against yielding bias of the spring.

Abstract: A captive fastener for securing two closure members together comprises a crew component adapted to be affixed to one of the closure members and a complimentary nut component adapted to be affixed to the other closure member. The screw component comprises a housing, a drive sleeve disposed within the housing for rotational movement therein, and a screw member in operatinal engagement with the drive sleeve whereby the screw member is axially movable between extended and retracted positions relative to the housing in response to the rotational movement of the drive sleeve. The nut component comprises a shell, a nut member disposed within the shell for limited axial and radial movement therein and fixed against rotation, and biasing means for urging against the axial movement of the nut member. The radial and axial movement of the nut member facilitates the alignment and engagement of the screw member with the nut member to eliminate binding when the closure members are assembled.

Abstract: A screw-type fastener comprising two cooperable assemblages for releasably securing a panel having one of said assemblages to an underlying support structure such as a sub-panel or other framework having the other assemblage. The said other assemblage of the fastener comprises a tubular housing enclosing a screw member which projects forwardly to an open end of the housing, toward the opening thereof. The said one fastener assemblage comprises a floating stud body carried by the panel and having an internally threaded bore which is adapted to receive the screw member when the stud body is applied thereto. The housing has ratchet rings encircling the screw member, provided with opposed faces containing sloped radial teeth which engage one another. One ring is keyed to rotate with the stud body, and the other is keyed for longitudinal non-rotary movement in the housing. A spring in the housing maintains the rings in contact.

Abstract: This invention provides a captive fastener in which a nut is held to a workpiece by a retainer ring held in a two-piece grommet attached to the workpiece, the retainer ring being flat and split, with its grain perpendicular to a diameter bisecting the split, and its inner and outer edges having alternate elongated recesses to increase the effective ring width without increasing spring force. The stud assembly includes a cage secured to the other workpiece, with side flanges removably and floatingly retaining a housing in which is a stud and spring biased ratchet washer. The notched outer end of the housing is bent over the head of the stud to secure the stud. The ratchet washer has tabs fitting in the housing wall, and ratchet teeth to engage teeth on the end of the nut. A cover fits over the housing.

Abstract: A screw-type fastener comprising two cooperable assemblages for releasably securing a panel having one of said assemblages to an underlying support structure such as a sub-panel or other framework having the other assemblage. The said other assemblage of the fastener comprises a tubular housing enclosing a screw member which projects forwardly to an open end of the housing, toward the opening thereof. The said one fastener assemblage comprises a floating stud body carried by the panel and having an internally threaded bore which is adapted to receive the screw member when the stud body is applied thereto. The housing has ratchet disks encircling the screw member, provided with opposed faces containing radial teeth which engage one another. One disk is keyed to rotate with the stud body, and the other is keyed for longitudinal non-rotary movement in the housing. A spring in the housing maintains the disks in contact.

Abstract: This invention provides a captive screw and a nut, the captive screw including a collar having an opening receiving the shank of a screw, the opening having a portion of wide diameter and a portion of narrow diameter. The screw has a full-depth thread at its outer end, and a truncated thread inwardly thereof, the truncated thread being dimensioned to pass through the narrow part of the opening in the collar while the full-depth thread cannot so that the screw is retained by the collar yet the end of the screw can be entirely retracted within the collar. The nut assembly includes a sleeve with an external shoulder, a straight knurl, and a flarable end, internally having a hexagonal portion in its bore. The nut has a hexagonal portion which extends into the sleeve and is smaller in lateral dimension than that of the opening to permit lateral floating movement, and longer axially than the hexagonal portion of the bore, to permit relative axial movement of the nut relative to the sleeve.

Abstract: A captive panel fastener having an enlarged head and a threaded shank with a pair of slots extending longitudinally along the outer periphery of said shank through the threads thereon. A C-shaped ring is trapped in a grommet assembly and has a pair of inwardly extending ends riding in the slots. In this manner, when the grommet assembly is installed in an aperture, such as in the skin of an aircraft panel, the fastener can be pushed between positions whereby in a first position the grommet assembly and C-ring are at one end of the shank holding the head and shank outwardly from the aircraft panel and, in a second position, the C-ring rides along the slots and abuts against the head so that the remaining threaded shaft can extend through the aperture and a nut threaded thereon securing the fastener to the panel.

Abstract: This invention provides a shear resistant panel fastener that includes a bolt having a head and a shank with a first relatively large diameter portion adjacent the head and a second smaller diameter threaded portion, a sleeve on the second portion of the shank, a collar around the sleeve and movable to a position around the first portion of the shank, the collar including a means for attachment to a workpiece, and a retainer means for prohibiting movement of the collar off of the sleeve in one direction. The smaller outer end of the shank is adapted to enter a clearance opening in a part for engagement with a floating nut at the opposite end of the opening, while the larger portion of the shank is drawn into the opening and the fastener is tightened. The smaller portion of the shank permits the fastener to be mated when the openings are misaligned while the larger portion of the shank provides shear resistance when the fastener is mated.