Abstract: An apparatus for attaching external stores or loads on a thin walled pole includes a first, open ended and externally threaded hollow sleeve defining a shoulder at one end, and a second, open ended and internally threaded hollow sleeve. An elliptical disk mounted to one end of the second sleeve defines a second shoulder. An other end of the first sleeve is threadable in an other end of the second sleeve to form a hollow sleeve assembly of variable length. The elliptical disk has an elliptical projection which fits in an elliptical hole of a thin walled pole when the hollow sleeve assembly is fitted therein. By using an external tool to relatively rotate the first and second hollow sleeves, one can tighten the hollow sleeve assembly to provide an expansive prestress and support for a bolt which passes through the hollow sleeve assembly for attachment of stores or loads.

Abstract: A device for mounting door frames, window frames and similar objects (1) at an adjustable distance from a support structure (2) has a tubular member (3) insertable into a through hole in the supported object (1), a screw menas (7) insertable into a hole (6) extending longitudinally through the tubular member (3), the tubular member (3) also including adjacent to a first end portion a restricting surface spaced from a resilient locking means (9), arranged to facilitate axial displacement of the screw head into a contact position with the restricting surface, but preventing withdrawal from this contact position. The second end portion of the tubular member (3) is arranged to form a preferably substantially disc-shaped abutment member (4), restricting the insertable distance of the tubular member (3) into the supported object (1).

Abstract: In a washer, a central opening is provided for receiving a screw. This large surface-area washer comprises a flat edge area extending so as to be closed with a convexly curved portion adjoining the latter. The central opening is defined by a wall which is conically shaped or comprises one or more steps. The washer serves to fasten parts to an underlying structure, particularly to fasten single-layer or multiple-layer roofing with insulating material on a fixed underlying structure.

Abstract: An improved closet bolt has a generally oval head, a shank including a threaded fastening portion extending from the head and generally concentric with respect thereto, and anti-turn ears or protrusions extending radially outwardly from a portion of the shank between the threaded shank portion and the head, the threaded portion adjacent the anti-turn ears having on opposite sides thereof a plurality of sawtooth or ramp members, the ramps sloping toward the bolt head, and wherein the bolt is constructed of a suitable high strength plastic material. Methods for using the improved closet bolt result in quick and efficient toilet installation, removal and repair.

Abstract: A locking plate which is adapted for fastening insulation to a roof deck employs a locking grommet which snaps into the roofing plate and seats the head of the fastener. The locking grommet locks the fastener to the plate and maintains a constant fixed relationship at all times between the fastener head and the locking plate thereby preventing the head from popping up above the plate.

Abstract: A nut and washer assembly comprising a nut structure and a washer member with the nut structure including a nut member and a cage gripping the nut member and having resilient tabs permitting insertion of the tabs into a washer bore with the tabs having protrusions for engaging a surface on the washer bore whereby the nut structure and washer member are held together as an assembly with the nut member being free spinning relative to the washer member.

Abstract: A wheel nut assembly for mounting a non-ferrous wheel, such as a magnesium or aluminum wheel to a wheel hub. The wheel typically has a plurality of openings to receive nut assemblies and each opening has a first section with a first diameter distal to the hub and a second section with a reduced diameter proxmate to the hub along with tapered section extending therebetween. The nut assembly comprises a body section having a plurality of peripherally extending tool engaging walls and with a bore extending through the body section. A skirt is located on the nut body and extends axially with the bore outwardly from the tool engaging walls. An insert formed of a ferrous material is used with the nut and is adapted to extend around the skirt and a portion of the body. The insert has a central opening sized to receive the skirt and an outer wall of the insert is adapted to engage an opening in the wheel.

Abstract: A device for restricting the flow of lubricant from a locomotive traction motor gear case and along an armature drive shaft of the traction motor and into the drive shaft's bearing mounting assembly, portions of which extend into the gear case. The device may also restrict lubricant flow into a return drain port of the drive shaft's bearing mounting assembly as a result of gear generated splash within the case.

Abstract: A disposable finishing article for mounting on a rotatable threaded spindle of a power tool. The finishing article contains a retaining nut on one side and a backing flange on the other non-removably secured together on the finishing article without the aid of adhesives in such a manner that the finishing article is placed in compression when it is operably secured upon the spindle of the power tool under operative loads. The nut and flange are secured together by upsetting one end of the nut causing it to protrude outwardly over the outer surface of the flange. A pressure cap member is secured to a plurality of fingers formed on the backing flange for engaging a shoulder formed on the spindle of the power tool during operation of the finishing article.

Abstract: A lug nut device is provided to enable an adjustable, durable and lockable connection between a wheel and an axle of a vehicle. The lug nut device includes two components, a lug nut composed of hardened metal and a tapered washer composed of aluminum. The lug nut is comprised of a plurality of arbitrarily arranged rounded and flat sides. The tapered washer has a large surface area, allowing for self-centering and weight distribution. The tapered washer and lug nut are connected by press-fitting the base of the lug nut to the flat end of the tapered washer. The two components then are fixedly engaged to a bolt, adjustably connecting the wheel to the axle. The lug nut device is more securely fastened by the means of a socket or key whose interior cavity circumference is complimentary to the sides of the lug nut.

Abstract: A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.

Abstract: An improved, thin walled fastener for retaining studs, rods, or the like is provided. The fastener is of the push-on type comprising a one-piece, generally thin, stamped sheet metal resilient body defining a generally centrally located stud retaining aperture for receipt and retention of studs, rods or the like. The body is preferably generally frusto-conical or dome shaped in cross section. The fastener is formed by punching or shearing a hole in a blank and then forming a generally dome shaped impression in the blank, the impression being generally coaxial with the axis of the punched hole. The required transverse extensions of the body are minimized by the utilization of the relatively smooth continuous edge of the punched hole rather than the burred edge of a punched hole as the stud retaining edge of the fastener stud retaining aperture.

Abstract: A locking fastener assembly for axle bearings and the like is free spinning during tightening and removal and is positively held against rotation after installation. The assembly is engageable with an axially slotted male threaded member and includes a nut with female threads and a flange end. A retainer washer includes spaced fingers formed around the nut flange for rotatably supporting the washer at the flanged end of the nut. The washer includes a tab received in the slot of the male threaded member permitting the nut to move axially but not to rotate on the male threaded member. When the nut is engaged by a wrench, the wrench releases a flexible and resilient locking clip to permit the nut freely to rotate. After the assembly has been threaded onto the male threaded member, removal of the wrench frees the locking clip and a lock finger is received in a space between fingers of the retainer washer positively to prevent further rotation of the nut.

Abstract: Formation of a screw thread in a mounting hole in furniture hardware made by the stamping and pressing process from thin sheet metal, which can be fastened to the furniture wall by means of mounting screws driven through the mounting hole into a furniture wall. The shaft of the mounting screw has at its head end a threadless section with a diameter smaller than the outer diameter of the thread. The mounting hole has a free passage cross section which is smaller than the outside diameter of the thread spirals of the mounting screw, and a ring-like section of the material surrounding the free passage cross section is bent to form a thread spiral extending over more than 180.degree., preferably more than 270.degree., but no more than 360.degree., with a pitch corresponding to the pitch of the mounting screw thread, a portion of the section of material forming the thread spiral being cut free from the surrounding material of the hardware piece along an arcuate boundary line.

Abstract: A finishing washer 10 is presented. Finishing washer 10 comprises a frustoconical perforated disk 15 having a plurality of tabs 20 extending inward from disk 15. When applied to a screw 50, finishing washer 10 provides a wider bearing area to the screw head 52, to establish a wear point between screw 50 and the material finishing washer 10 will bear on. In this manner, the material is not damaged by friction or pressure when screw 50 is tightened. Further, stripping of screws is lessened due to the use of finishing washer 10 of this invention.

Abstract: A tri-lobular section of a bolt receives a mating tri-lobular bore of a washer to prevent the washer from rotating. Roll formed male threads on the tri-lobular section of the bolt receive a cooperating nut. The nut has a base shaped for wrench engagement, a thin walled barrel, a spring temper, and a threaded bore. The thread of the nut has two thread diameters: a large diameter thread in the base and a smaller diameter thread in the barrel continuing from the base thread; both thread sections have the same pitch. The barrel thread is substantially circular when relaxed. The barrel elastically flexes in response to the lobes of the nut as the lobes turn in the barrel, and when rotation stops, the barrel generally conforms to the tri-lobular shape of the bolt to form a thread lock, but the base does not.

Abstract: A bubble cap assembly is provided with keyways and a special keyed lock washer with locking tabs to securely fasten the bubble cap during operation in a reactor. The unique arrangement also accommodates simple removal for easy maintenance and decoking without damaging the bubble cap assembly.

Abstract: A fastener assembly for securing roofing on soft insulation material to a solid base is formed of an axially elongated screw and a large surface washer. The screw has an elongated shank with a cutting tip at one end and a screw head at the other. A self-cutting thread is formed on the shank. The shank has a thread-free section extending from the screw head. The thread-free section has a diameter not greater than the diameter of the opening in the washer into which the screw is inserted. The washer has a countersunk area around the screw opening to receive the screw head in a recessed manner. The shank of the screw, at a spaced distance from the screw head and in the axially extending region of the thread-free section has a stop or similar member which forms a support for the washer. With the assembly secured to the solid base, the washer is tiltable relative to the screw. Accordingly, the fastener assembly can be stepped on without any damaging transfer of stress from the washer to the screw.

Abstract: A fastener plate for use in association with a fastener in a roof structure is described. The fastener plate includes a disc-shaped plastic member that has a depending central portion extending from its lower planar face and a depending peripheral flange. A metal insert seated in an opening within the plastic member contains an opening through which the fastener can be threaded.

Abstract: A panel coupler for coupling together two facing panels at a predetermined distance from each other by passing a bolt through the panels and tightening a nut on the bolt comprises a panel clamp member having two facing planar portions coupled together by a U-shaped portion, the planar portions being provided with aligned holes through which the bolt is passed, and a cylindrical portion extending outwardly from the edge of the mounting hole of one of the planar portions, the outer periphery of the cylindrical portion being provided with a plurality of axial ribs, and a metal ring pressure fitted on the cylindrical portion.

Abstract: An anchor and stress plate assembly adapted to secure an insulation layer to the deck of a roof without penetrating the lower surface of the deck which is formed either of relatively soft or hard decking material. The anchor is provided with a flanged head and a shank whose leading section takes the form of an auger screw having a root which tapers toward the tip and a threading about the root whose crests are of approximately uniform diameter. When the anchor is turned into soft decking material, the tapered root of the auger screw then acts to pack this material into a dense mass in the region surrounding the screw to enhance the holding power of the anchor. In hard decking material, a hole must first be drilled therein to receive the auger screw whose root when the anchor is turned in fits within the hole and whose crests then cut a thread in the hole wall to securely retain the anchor.

Abstract: A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an inwardly extending lip on the inside surface of the free end of the protrusion. In an alternative embodiment sloping ribs guide a fastener head into snapping engagement with an inwardly projecting lip. In all embodiments a resilient rib is disposed on a shoulder formed in the aperture in the washer. The rib resiliently urges the head of the fastener into engagement with the lip. The washer includes a downwardly extending hub, which may be equipped with means for retaining the washer in a batten strip.

Abstract: A threaded fastener unit comprising a preassembled fastener for use in association with thin metal panels having a head with a clamping surface thereunder, a shank and a drill point, said shank having an upper unthreaded shank portion, a lower threaded shank portion with an annular shoulder therebetween and a washer, said threaded shank portion having a plurality of helical thread convolutions for forming complementary threads and extruding a portion of a panel, and said shoulder being adapted to deform the extruded panel portion for gripping the screw and resisting retrograde rotation of the screw.

Abstract: A friction washer for securing a wire mesh screening on the protruding end of rock bolts inserted into the wall of a mine is disclosed. The friction washer has a central opening with teeth set into the inside diameter thereof and adapted to engage the end of the bolts. A plurality of upstanding tabs are located on one face of the friction washer and radially spaced from the center of the central opening at a distance substantially equal to half the outside diameter of a hollow tube so as to allow the tabs to fit over the end of the hollow tube for holding the washer during installation on the protruding end of the rock bolt.

Abstract: A fastener assembly adapted for use in connection with a first and second apertured workpiece, said fastener assembly comprising a fastener, washer and rubber grommet, said fastener having a head, and a shank; said shank including an upper shank portion, a lower threaded shank portion and a pair of wings spaced between said upper unthreaded shank portion and lower threaded shank portion; said washer and rubber grommet being telescopically associated with said fastener.

Abstract: A ceiling or wall for a partition structure that contains framing members has the usual sheets of wallboard applied side-by-side to the framing members so that seams exist between the edges of adjacent sheets. Improved fire resistance is derived from runners which extend between the framing members directly behind the seams so as to serve as fire stops and as additional support for the wallboard sheets. Each runner is at its ends attached to the framing members between which it extends and further consists of several components which slip relative to each other, so that the length of the runner remains constant even though its components experience thermal expansion. This prevents the runners from bowing and pushing the wallboard sheets away from the framing members in the event of a fire. The runners further receive and anchor edge fasteners.

Abstract: The present invention provides a self-retracting, captive fastener assembly which allows the application of a controlled preload not requiring separate measurement during or after application. The assembly includes the use of a hold-out spring (31) which is isolated and fully retracts the assembly when the installed assembly is not engaged with a substructure. A housing (32) is provided for the hold-out spring (31) and contains the spring (31) when it is fully compressed. For the controlled preload, disc springs (40) are used. The shoulder (60) of the bolt shank portion (24) is staked so as to form protrusions (61,62,63,64) for captivating these mentioned elements upon the bolt. A removable, retaining element or stop-nut (50) is also provided for securement of the fastener to a first structure 65. The stop-nut (50) is constructed so that it must be seated against substructure (70) in order to achieve the controlled deflection of the disc springs (40) and thereby achieve the desired preload application.

Abstract: A wheel nut is formed of a nut body and a seating washer, each having a cooperating engagement surface. The washer engagement surface is spheroidal and of non-constant spherical radius of curvature, and the washer additionally includes a flat bearing surface for engagement with a flat work surface. The washer is formed of a softer material than is the nut body so that, when the wheel nut is tightened against the work surface and about a substantially perpendicular stud projecting therefrom, the spheroidal surface of the seating washer deforms from its initial contact with the nut body surface at only the outer periphery of the washer to contact with the nut body along the entirety of the washer engagement surface.

Abstract: A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an inwardly extending lip on the inside surface of the free end of the protrusion. A resilient rib is disposed between the protrusion and the aperture in the washer. The rib resiliently urges the head of the fastener into engagement with the lip. The washer includes a downwardly extending hub, which may be equipped with means for retaining the washer in a batten strip.

Abstract: A self-centering seal for threaded fasteners and the like consists of a rigid, load-bearing retainer in the form of a ring having an elastomeric seal molded in place therein at the inner periphery. The seal is of tear drop shape in section having a portion which projects beyond the surfaces of the retainer, adjacent recessed portions and an inner tip portion with a relatively large radius of curvature. The diameter of the tip portion is sized to be an interference fit on the fastener shank so that the seal may be preassembled with the fastener.

Abstract: An undercut, sealing threaded fastener for engagement with an internally threaded workpiece, and a method of forming the same as provided. The fastener comprises a driver head and a shank extending axially from an undersurface of the driver head. The shank includes an intermediate unthreaded portion and a threaded portion defining a given thread form having a crest diameter and a given root diameter. An undercut groove is provided in the undersurface of the driver head, this undercut groove having an inner diameter no greater tha the crest diameter of the internal or female thread, and preferably also no greater than the root diameter of the external thread, and an outer diameter greater tha the crest diameter. An unthreaded shank portion is formed intermediate the threaded shank portion and the driver head and extends continuous with the inner diameter of the undercut groove.

Abstract: The locking screw for the adjustable connection of a hinge strap to a base plate of a hinge has an external thread, with which the locking screw is screwed into a corresponding threaded hole in the hinge flap. The end face of the bolt portion of the locking screw abuts on the corresponding face of the base plate. In order to ensure a secure seating of the locking screw even under changing loads, a plate spring is attached to the end face of the locking screw and is spring-loaded axially, which abuts the base plate with its spring front face.

Abstract: A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an inwardly extending lip on the inside surface of the free end of the protrusion. A resilient rib is disposed between the protrusion and the apertured in the washer. The rib resiliently urges head of the fastener into engagement with the lip. The washer includes a downwardly extending hub, which may be equipped with means for retaining the washer in a batten strip.

Abstract: A nut retainer for use with a structural member having a nut entrance channel defined between a pair of opposed shoulders or flanges of some predetermined thickness and a nut receiving channel disposed beneath the shoulders. The nut retainer has a generally frusto-conical body constructed from a resiliently deformable polymeric material with the body smaller diameter end fixedly secured to a rectangular nut upper face in a surrounding relationship with a threaded fastener receiving opening. The body larger diameter end is spaced from the nut upper face by some predetermined distance and has a diameter greater than the width of the structural member entrance channel. The retainer body is conformed such that the body exterior side wall will engage the structural member shoulders at areas therealong which are spaced from the nut upper face by a distance which is less than the thickness of the shoulders when the nut is inserted width-wise into the entrance channel.

Abstract: A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.

Abstract: A clutch mechanism for releasably gripping the pin or post of an earring has a circular end that normally confronts a person's ear lobe when the pin or post of the earring is engaged in the clutch mechanism. A load distribution member, preferably of vinyl, has a cylindrical sleeve formed with an inwardly directed lip at one end which expands sufficiently to allow the circular end of the clutch mechanism to be inserted into the interior of the cylindrical sleeve. The cylindrical sleeve has a substantially closed end wall at its other end, having a radially directed flange that provides, together with the end wall, a substantial increase in the surface area as contrasted to that provided only by the circular end of the clutch mechanism.

Abstract: An assembly for fastening a compressible layer of insulation includes a threaded screw projecting through the center of a flat circular disk of a resilient plastic material. A central hub on the disk is received between the head and a flange spaced below the head to hold the disk adjacent the head, the hub being defined in part by resilient fingers which flex outwardly to let the flange pass through the hub as the screw and the disk are assembled together. An annular surface is formed on the underside of the disk at the periphery thereof to engage the insulation and ribs which decrease in width are formed on the underside of the disk and project radially from the hub to the peripheral surface so that an uplift force causes the disk to flex upwardly progressively from the periphery toward the center.

Abstract: A captive panel fastener includes three parts, a screw, a tapered bushing, and a slotted expandable sleeve. The bushing fits closely over the shank of the screw, and has an outwardly extending shoulder or flange at its lower end away from the head of the screw, to retain the expandable sleeve in the expanded condition. The slotted sleeve has a cylindrical upper flange which is generally co-extensive with the head of the screw, and has a lower flange which in the initial or relaxed condition is smaller than the panel hole through which the captive fastener is to be secured. Following insertion of the shank of the screw and the unstressed slotted sleeve into a hole in a panel where the fastener is to be secured, further pressure on the head of the fastener forces the sleeve into the bushing, expanding the lower end of the sleeve, so that its lower slotted flange grips around the lower edge of the panel.

Abstract: A fastener for securing workpieces having aligned bores and including a tubular sleeve and a pin with the sleeve having an elongated sleeve shank and a through bore and the pin having an enlarged pin head and an elongated pin shank, the pin shank having a retaining groove and a lock groove located proximate thereto, a resilient retaining clip located in the retaining groove and being axially captured therein, the retaining clip being of a split construction and having a relaxed outside diameter greater than that of the workpiece bores and being adapted to be located in at least one of the bores with an interference fit to thereby axially retain the pin to the workpieces in a preassembly, the sleeve shank having a sleeve lock groove adapted to be radially deformed into an aligned lock groove in the pin, the sleeve shank having a grip adjusting groove adapted to deform radially whereby the fastener can accommodate workpieces varying in total thickness.

Abstract: A fastener with a metal stud removably receivable in a plastic carrier member. A shank of the stud is inserted through a hole in the carrier member and an enlargement on the shank limits the extent to which the shank can be pushed through the hole. The stud is retained in the carrier member by entrapment of a portion of the carrier member surrounding the hole between the enlargement and a ring on the shank which has an interference fit with the hole. To facilitate inserting the ring into and removing it from the hole, the sides of the ring are tapered. The carrier member can be journaled on the shank to rotate freely with respect to the stud. If it is desired to prevent this rotation, the enlargement can have a non-circular configuration and be received in a mating non-circular recess in the carrier member.

Abstract: An electrically insulating fastener having three pre-assembled elements. A nut with a tubular body and an integral spring flange has a disc-shaped spacer attached to the flange. The spacer has a central opening with a cylindrical collar formed around it. A flexible and resilient rubber sleeve is fitted over the collar. The nut, spacer, and sleeve form a unitary fastener which can be used with a headed threaded fastener to make electrical connections through heat sinks of various thicknesses.

Abstract: A mounting bolt assembly to permit one man toilet bowl installation is disclosed. The assembly includes a threaded bolt with integral head to engage within the slot of a usual floor flange. The bolt is undercut in spaced relationship from the head to facilitate shortening after installation simply by bending or snapping about the undercut groove without any need for sawing. A resilient flat washer is associated with the bolt in spaced relationship from the head in a position to permit a portion of the resilient washer to be bent or otherwise urged into the floor flange slot. In this manner, the bolt can be supported in an upright orientation from the floor flange without manual intervention to thereby permit the toilet bowl to be applied over the bolt by a single workman.

Abstract: A locking and securing means is disclosed which includes a base member, a threaded member and a sprocket. The base member defines vertically extending fingers with gaps therebetween and a threaded bore. The threaded member with a flat or irregular shape on its upper leg segment extends through this bore to a desired position. The sprocket, which is mounted on the threaded member prior to insertion into the bore, has radially extending teeth to mesh with the base-member-defined gaps and an internal shape to mate with the threaded-member shape. The threaded member is thus secured to a fixed height or position.

Abstract: A nut and washer unit for attachment of a plumbing faucet or fixture permits rapid and easy mounting at a supporting structure. The nut is placed on the shank before the faucet or fixture is dropped through the mounting hole. A C-shaped washer is positioned from below, between the nut and the mounting structure. An axially separable coupling between the nut and washer achieves initial placement of both parts at the mounting structure by simple hand rotation of the nut. Final clamping is achieved by engagement of wings formed on the washer, rotation of the washer causing corresponding rotation of the nut and, hence, advancement of both parts into clamping position.

Abstract: The invention proposes a disc brake having a caliper (14) slidably mounted on a fixed support (10) by at least one axial column (16) slidingly received in an open bore (58) in the caliper (14). The brake is characterized in that the column (16) includes an axial abutment associated with the sleeve (40) in order to limit the axial displacements of the latter with respect to the caliper (14) when the stem (46) of the bolt (42) is unscrewed from the fixed support (10). The abutment (86) consists of a crown (70) of U-shaped cross-section the inner cylindrical sidewall (72) of which is mounted in the bore (43) inside the sleeve (40) and the flat annular end (76) of which is held tight between the end (52) of the sleeve and the fixed support (10) when the column (16) is fixed to the latter, the abutment surface (86) consisting of the extreme free edge of the outer cylindrical sidewall (74) of the crown (70).

Abstract: An improved fastener assembly may be used to mount a vehicle wheel on a hub. The fastener assembly includes a nut which is rotatable relative to a washer to enable the fastener assembly to be tightened without marring the wheel. The washer has an annular collar which is loosely connected with the nut by a retainer section which extends from one axial end portion of the nut. The nut and washer collar have abutting annular load transmitting surface areas. The washer also has an annular load transmitting and indicating section which extends radially outwardly from the collar. The load transmitting and indicating section includes a bearing section and a spring section. The spring section flares radially and axially outwardly from the bearing section. When the fastener assembly is tightened with a predetermined preload, the spring section is flattened to provide a visual indication that the desired preload has been applied.

Abstract: The invention provides a terminal clamp assembly comprising a fastener and one or more captive members and a method for making such a terminal clamp assembly. The terminal clamp assembly comprises a threaded fastener including a driver head portion, a threaded shank portion of predetermined thread crest diameter and an unthreaded shank portion of lesser diameter intermediate the threaded shank portion and the driver head portion. A captive member has a through aperture of greater diameter than the thread crest diameter and surrounding the unthreaded shank portion, and laterally oppositely outwardly extending protrusions on opposed outer edge portions. These protrusions are compressed by a planar die so as to deform the through aperture to a dimension smaller than the thread crest diameter, thereby captively assembling the captive member with the fastener, subsequent to formation and heat treatment of the fastener.

Abstract: A plastic plate is provided for use with a fastener to secure insulation to a metal roof deck. The plate has a planar portion having a centrally disposed tapered hub portion. The central opening and preferably a clear through hole extends in the plate in the area of the hub. The bottom of the plate includes anti-rotational means for engagement with the insulation during driving of the fastener. The anti-rotational means may be associated with the bottom of the planar portion, the hub or both. The fastener may include two separate and spaced apart threaded portions so that as the fastener first engages the metal deck, the unthreaded portion is within the previously tapped hub portion.

Abstract: A one-piece spring washer for use with threaded fasteners such as screws has a self-retention feature whereby, once positioned on the screw, it remains firmly in place. The washer comprises an annular body defining a central aperture for receiving the screw shank and a plurality of thread engaging teeth bent up from the body about the aperture for holding the washer in place. Each tooth has a helical thread confronting edge having a pitch that is steeper than, and in the opposite sense of, the pitch of the screw thread so that the teeth extend crosswise of and grip the crest of the thread. A plurality of spring elements are bent up from the washer body outboard of, but in the same direction as, the teeth. The spring elements, which flex downwardly when the screw is tightened against a workpiece, load the screw axially to resist loosening of the screw.

Abstract: A preassembled domed washer and fastener that can be snapped together after thread rolling and heat treatment. The inner periphery of the washer is reduced in thickness to provide flexibility and the fastener is provided with an interrupted annular ledge. The flexibility of the washer's inner periphery permits it to yield as it is pushed over the ledge and to snap back into engagement. The knurling or other interrupting of the ledge insures that large slivers from the case hardened fastener which cause handling problems and may reduce the amount of interference to the point the washer can fall off, are not formed.