Abstract: Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features are disclosed. Methods of assembly and systems for use are described.

Abstract: A connection apparatus for attaching a first truss to a second truss has a first and second connection segment, a bolt and an optional spring. The first connection segment has an aperture dimensioned to receive the threaded end and the shank of the bolt. The aperture is also dimensioned to prevent the head end of the bolt and the threaded end from passing through, and the aperture comprising a recess for receiving the second end of the spring. The first connection segment also has a side opening, open to the aperture, dimensioned to receive the shank of the bolt. The first connection segment also has a shoulder portion within the aperture dimensioned to closely fit around the shank of the bolt and prevent the threaded end of the bolt from passing therethrough. The second connection segment for attaching to the second truss has a threaded hole dimensioned to fixably receive the threaded end of the bolt.

Abstract: Racking assemblies for solar panel installations are provided. The racking assemblies may include a series of posts arranged in two parallel rows and anchored to the ground or other suitable surface. Purlins may be coupled to and may span the posts of each row. Specialized clamps may be used to attach the purlins to a series of mounting rails. The mounting rails, in turn, may support an array of solar modules.

Abstract: Fasteners and related systems according to the invention include a collet body having a first part of a two part anti-rotation arrangement and a cylinder body having a second part of the two part anti-rotation arrangement wherein the collet body and the cylinder body are matably axially translatable with respect to each other, and have the same or similar outer diameter in some embodiments or not in others. A threaded member rotationally engages the collet body and compressively contacts the cylinder body during operation of the fastener to creating a clamping effect. Rotational interference between the first and second parts of the anti-rotation arrangement preferably occurs at sectional face portions of at least the collet body. Resistance to induced rotation of the cylinder body relative to a work piece rotation of the threaded member is preferably provided by a tool engaging a tool interface present on the cylinder body.

Abstract: An interlocking interface retains a screw head in a socket to prevent migration of the screw head out of the socket, or to lock the screw head in the socket. The interlocking interface may retain or lock the screw at various polyaxial angles with respect to the socket. The screw head includes external corrugations. The socket includes an internal corrugated structure which interlocks with the external corrugations of the screw head when the screw is at various polyaxial angles with respect to the socket. A counterbore may be adjacent either or both ends of the socket.

Abstract: Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features disclosed are particularly well adapted for use with a safety or secondary filter cartridge, usable with media thereof projecting into an open interior of a main filter cartridge, in use. An example filter cartridge is described, with a non-pleated end and a pleated end, although variations are also described. Advantageous main cartridges are also described. Methods of assembly and systems for use are described.

Abstract: A method and apparatus for fastening structures. A first end of a body is placed into a hole on a first side of the structures. The body has an outer surface with a noncircular cross-section. A nut element is positioned on a flange at a second end of the body. A bolt is moved into a channel at the first end of the body towards the nut element on the flange on the second end of the body on the first side the structures. The bolt and the nut element are fastened to each other.

Abstract: A burner and/or injector panel apparatus includes a flange rotatable within a cylindrical aperture in a horizontal plate and securely retainable between one or more retaining clips and the plate. Extending downward from the flange is a main body with a cylindrical chamber. A burner, burner/injector, or injector is contained within the cylindrical chamber. The main body has a helical cooling circuit extending around the cylindrical chamber and burner and/or injector. The burner and/or injector panel apparatus may be installed through a furnace wall, especially an electric arc furnace, more particularly, a balcony panel of a sump area of an electric arc furnace. The burner and/or injector panel apparatus may be tilted from horizontal or rotated around its vertical axis in order to better target a target area of a molten bath of metal with a flame, jet of oxygen, or stream of carbon particles.

Abstract: A bone screw is created, with a thread section (1) with a tip (6) at a first end and a head (8) for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section (1) is constructed as tubular and its wall has a plurality of recesses.

Abstract: An implantable device including a tapered body having a sidewall, an internal cavity, a first end, and a second end, the sidewall including a frusto-conical inner surface extending from the first end to the second end, the first end including a first end opening and the second end including a second end opening, a first side opening extending through the sidewall, a second side opening extending through the sidewall, the second side opening arranged diametrically opposite the first side opening, an external thread arranged helically about a central longitudinal axis of the tapered body, the external thread having a continuously decreasing outer diameter along the tapered body, a first ancillary member operatively arranged to be inserted through the first end opening and then the first or second side opening, and a second ancillary member operatively arranged to be inserted through the first end opening and then the first or second side opening.

Abstract: An enclosure can include a top enclosure portion having a top flange and a first top engagement feature. The enclosure can also include a bottom enclosure portion mechanically coupled to the top enclosure portion, where the bottom enclosure portion has a bottom flange that mechanically couples to the top flange and a first bottom engagement feature that mechanically couples to the first top engagement feature. The enclosure can further include a first fastening device mechanically and movably coupled to the first top engagement feature and the first bottom engagement feature. The first fastening device, in an engaged position, can maintain a flame path between the top flange and the bottom flange. The first fastening device, in a disengaged position, can fail to maintain a flame path between the top flange and the bottom flange.

Abstract: The present invention relates to a quick coupling for pipe pile, comprising an upper end plate, a lower end plate and a screw hook made of spring steel for coupling the upper and lower end plate, a plurality of tapped holes are uniformly provided on the upper end plate, a plurality of holes corresponding to the tapped holes are provided on the lower end plate, a lock hole is positioned at the lower portion of the hole, while the cross-section area of the lock hole is bigger than the cross-section area of the hole. One end of the screw hook is provided with a screw end mating with the tapped hole on the upper end plate, while the other end is provided with a hook end mating with the lock hole on the lower end plate, whereby the upper and lower end plate can be coupled firmly.

Abstract: An apparatus for joining a first member and a second member includes fasteners for joining the first member and the second member, a shear transfer layer for transferring shear loads between the first member and the second member separate from the fasteners for joining the first member and the second member. An assembly includes a first member, a second member, and fasteners for joining the first member and the second member. The assembly further includes a shear transfer layer for transferring shear loads between the first member and the second member separate from the fasteners for joining the first member and the second.

Abstract: An attachment arrangement for attaching a component to a base item, with at least one fixing device for fixing one section of the component on a section of the base item. At least one connecting device with a connecting element and at least one receiving element are provided. One of the elements is arranged on a component section and the other of the elements is arranged on a base item section. The two elements detachably engage with one another in a form fit. Loads can be transferred at least in the direction of a first axis, and a relative movement is possible between the elements in the direction of a second axis, different from the first axis. A connecting device is disclosed for such an attachment arrangement. A method is disclosed for purposes of attaching a component to a base item by means of such an attachment arrangement.

Abstract: An anti-tamper system including: a fixing device and an anti-tamper detection device; the fixing device comprising a body and a head whereby the head having a larger cross section then the body for enabling a tool to engage and drive the body into a first material layer thereby makes a firm connection with the anti-tamper detection device between the head and the first material layer; the fixing device further comprising a lock wherein the head is locked to the body by the lock where there is no external magnetic field and wherein the head becomes disengaged from the body when the lock is unlocked by an external magnetic field; and whereby the anti-tamper detection device detects and records a change the connection when the head becomes disengaged.

Abstract: A bolt for securing timber to any other material, comprises: a bolt head with a series of spiked teeth on its underside; a cylindrical bolt rod extending from the bolt head is threaded and split into two rods at its free end, so as to define a slot therebetween. In use a user drills a hole through pieces of timber to be secured together, and hammers the bolt through the hole. The spiked teeth on the bolt head lock into the timber, securing the bolt at one end. At the free, split end of the bolt rod, a washer and nut are tightened onto the bolt. A cold chisel is hammered into the slot between the split ends of the rod, bending the ends outwards and thus preventing the nut from loosening.

Abstract: A hole punch and a method for piercing a workpiece wherein a hole punch includes a sheet metal part and a piercing body attached thereto which carries out the piercing function and which is provided with a thread cylinder or can be provided with a thread cylinder, for example by pressing a threaded pin into a centrally arranged passage of the hole punch, wherein the hole punch can also be formed in one piece as a piercing body with a sheet metal-like flange. Furthermore a method is claimed for the manufacture of the hole punch.

Abstract: A self-clinching fastener for insertion into ductile sheets of varying thicknesses has increased push-out and torque-out resistance. The self-clinching fastener includes a plurality of radial projections and spline teeth that embed into the ductile sheets, causing the material to cold flow into a recess, thereby permanently clinching the self-clinching fastener to the ductile sheet.

Abstract: A method of securing a composite plastic part to an engine with a bolt or a bolt and washer. The bolt has a head including teeth that are adapted to engage either the part or the washer. The bolt is tightened to cause the teeth to compress the surface of the part to resist rotation that may become loosened as a result of vibration of the engine. The part may be an intake manifold, a cam cover or an oil pan. Locking features, such as teeth, may be provided on the clamping surface of the bolt and on both surfaces of the washer. Alternatively, a knurled or serrated surface may be provided instead of the teeth.

Abstract: There is provided a bolt support structure which can absorb displacement of a bus bar and prevent the bus bar from bending during fastening of bolt, having a bolt including a head portion and a shaft portion and a mount portion to which the head portion is mounted movable in an axial direction of the shaft portion. The mount portion includes a bottom and upper plates between which a large-diameter portion of the head portion is positioned. The shaft portion and a small-diameter portion of the head portion are passed through a notch of the upper plate. A gap between the bottom and upper plates is larger than the thickness of the large-diameter portion. After the head portion is mounted to the mount portion, the nut is attached to the shaft portion so that the bus bar and the terminal clamp are sandwiched between the head portion and the nut.

Abstract: A removable stud has a stem having external machine thread formed on an exterior surface of the stem. A head extends from the external machine thread. The head has a profile for rotational interface. A base is connected to the stem. The base has a top base portion. A flange extends from the base. A lodging notch is formed on the flange. The lodging notch has a lodging notch sidewall. A front curve is formed on the base. The front curve has a radius of curvature that is coaxial to an axis of the stem. The front curve terminates at a flat stop. A bottom swivel is formed as a protrusion on a lower portion of the base. The bottom swivel has a center that is coaxial to an axis of the stem.

Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure. Each fastening device can also include a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. Each fastening device can further include a fastener positioned atop the first load distributing member, where the fastener traverses the first load distributing member, the cover flange, and the body flange. Each fastening device can also include a fastener receiver positioned under the second load distributing member and mechanically coupled to the fastener.

Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure. Each fastening device can also include a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. Each fastening device can further include a fastener positioned atop the first load distributing member, where the fastener traverses the first load distributing member, the cover flange, and the body flange. Each fastening device can also include a fastener receiver positioned under the second load distributing member and mechanically coupled to the fastener.

Abstract: A bolt (10) for securing timber to any other material, comprises: a bolt head (101) with a series of spiked teeth (102) on its underside; a cylindrical bolt rod (103) extending from the bolt head (101) is threaded and split into two rods (105a,b) at its free end, so as to define a slot (106) therebetween. In use a user drills a hole through pieces of timber to be secured together, and hammers the bolt through the hole. The spiked teeth on the bolt head lock into the timber, securing the bolt at one end. At the free, split end of the bolt rod, a washer and nut are tightened onto the bolt. A cold chisel is hammered into the slot between the split ends of the rod, bending the ends outwards and thus preventing the nut from loosening.

Abstract: A fitting for channel framing includes a coupling component and a washer secured to the coupling component. At least a portion of the coupling component has a generally dovetail cross-sectional shape configured for reception in an external fitting groove of the channel framing. The washer engages outside surfaces of a second side of the channel framing at opposite sides of the external fitting groove when the coupling component is received in the external fitting groove.

Abstract: The present invention, and inventive system, describes a lock system that is designed to be attached to an existing cast iron loose grate and or manhole covers that sits in a cast iron or other material frame allowing the loose grate to be locked into the frame so it cannot be removed from the frame accidently or on purpose without the proper tool to unlock the security locking bolt. In some embodiments of the present invention, the present invention does not need a frame and interacts with the wall holding the cover directly. In at least one embodiment the present invention operates by an upper and lower section. The lower section may have multiple bars that operate independently of each other. These lower sections can rotate about a screw which is located in a hole drilled through a grate or manhole, such that the lower sections can rotate across the manhole cover and extrude past the radius of the manhole cover.

Abstract: A fastening member includes a bolt and a nut for attaching a compressor to a vehicle body. A non-circular relative rotation prevention portion is formed below a head portion of the bolt. A washer is non-rotatably press fitted around the relative rotation prevention portion. Before the attachment, the head portion and the washer are temporarily fixed with a space generated therebetween. An elastic body, which is attached to the compressor, is disposed between the washer and the nut. A cylindrical member is provided at an inner circumference of the elastic body. As a result, when the nut is screwed, an axial force of the nut is transmitted to the washer via the cylindrical member, and the space between the washer and the head portion is reduced, completing the attachment.

Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure. Each fastening device can also include a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. Each fastening device can further include a fastener positioned atop the first load distributing member, where the fastener traverses the first load distributing member, the cover flange, and the body flange. Each fastening device can also include a fastener receiver positioned under the second load distributing member and mechanically coupled to the fastener.

Abstract: An unconventional bolt includes a main body having two heads, and two threaded rods respectively formed at the external surface of each head coaxially with the main body, wherein the cross section of each head has a noncircular shape, and the axial projection of the cross section of the middle of the main body is located in the noncircular axial projection of each head of the main body. The unconventional bolt has a simple structure and a convenient assembly, and can improve the strength and rigidity of the nested profiled components after the connection; and the fastening device using the unconventional bolt can not only support the component but also reinforce it, thus effectively preventing the nested profiled components from transforming.

Abstract: A turbine engine includes multiple tierod supports. Each of the tierod supports is connected to an inner frame case of the turbine engine via multiple fasteners and at least one self anti-rotating bushing component.

Abstract: A method of securing a composite plastic part to an engine with a bolt or a bolt and washer. The bolt has a head including teeth that are adapted to engage either the part or the washer. The bolt is tightened to cause the teeth to compress the surface of the part to resist rotation that may become loosened as a result of vibration of the engine. The part may be an intake manifold, a cam cover or an oil pan. Locking features, such as teeth, may be provided on the clamping surface of the bolt and on both surfaces of the washer. Alternatively, a knurled or serrated surface may be provided instead of the teeth.

Abstract: An anti-tamper system including: a fixing device and an anti-tamper detection device; the fixing device comprising a body and a head whereby the head having a larger cross section then the body for enabling a tool to engage and drive the body into a first material layer thereby makes a firm connection with the anti-tamper detection device between the head and the first material layer; the fixing device further comprising a lock wherein the head is locked to the body by the lock where there is no external magnetic field and wherein the head becomes disengaged from the body when the lock is unlocked by an external magnetic field; and whereby the anti-tamper detection device detects and records a change the connection when the head becomes disengaged.

Abstract: The present clinch screw can be secured through a hole in a sheet of metal by a simple press-in application like a tack pin. An undercut clinch feature on the screw shank just underneath the head and above a threaded bulb portion of the shank secures the screw to the sheet as material from the sheet cold-flows into the undercut. Simultaneously, sheet material also flows around and between the bulb threads which forms partial female threads in the sidewall of the sheet hole and provides added pull-out resistance. The screw can then be simply turned out to remove it. In doing so additional female threads are cut into the upper portion of the hole sidewall as the threaded bulb moves upward and then out of the hole. A re-useable threaded hole in the sheet is left behind.

Abstract: A locking screw apparatus is provided. In exemplary embodiments, the locking screw apparatus may comprise, a stem; a head attached to the stem; a threaded portion adjacent the stem, the threaded portion having a set of screw threads disposed thereon; and a locking means comprising a protrusion adapted to resist counter-rotation of the locking screw apparatus once in place within a material, the protrusion comprising at least one of counter-angled threads and one or more locking teeth.

Abstract: A locking assembly includes a locking member and an engaging member. The locking member includes a blocking portion and a locking portion. The blocking portion comprises an end surface and a resisting surface opposite to the end surface. The locking portion extends from the resisting surface. The resisting surface is a rounded surface. The engaging member engages with the locking member. The engaging member comprises an engaging surface adjacent to the blocking portion of the locking member. The engaging surface is a rounded surface.

Abstract: An anti-tamper system including: a fixing device and an anti-tamper detection device; the fixing device comprising a body and a head whereby the head having a larger cross section then the body for enabling a tool to engage and drive the body into a first material layer thereby makes a firm connection with the anti-tamper detection device between the head and the first material layer; the fixing device further comprising a lock wherein the head is locked to the body by the lock where there is no external magnetic field and wherein the head becomes disengaged from the body when the lock is unlocked by an external magnetic field; and whereby the anti-tamper detection device detects and records a change the connection when the head becomes disengaged.

Abstract: A self-clinching fastener for insertion into ductile sheets of varying thicknesses has increased push-out and torque-out resistance. The self-clinching fastener includes a plurality of radial projections and spline teeth that embed into the ductile sheets, causing the material to cold flow into a recess, thereby permanently clinching the self-clinching fastener to the ductile sheet.

Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure. Each fastening device can also include a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. Each fastening device can further include a fastener positioned atop the first load distributing member, where the fastener traverses the first load distributing member, the cover flange, and the body flange. Each fastening device can also include a fastener receiver positioned under the second load distributing member and mechanically coupled to the fastener.

Abstract: Procedure for the assembling between at least two panels, and a device associated thereto, where said procedure is carried out through at least a single operator or machine, and comprises the following steps: receiving at least two panels, where said panels comprise respectively at least one through hole; introducing an assembling device comprising a nut and a screw, through the respective hole of each panel; turning the device around the same side where it was introduced previously, in such a way that the nut and the screw rotate jointly, until the device comes into contact with at least one blocking element, and the joint movement of the nut with the screw is stopped; and next the nut and the screw are brought mutually closer together, in such a way that both panels are assembled.

Abstract: The present invention provides a fastening member and a compressor apparatus capable of improving workability of assembling. A fastening member includes a bolt and a nut for attaching a compressor to a vehicle body. A non-circular relative rotation prevention portion is formed below a head portion of the bolt. A washer is non-rotatably press fitted around the relative rotation prevention portion. Before the attachment, the head portion and the washer are temporarily fixed with a space generated therebetween. An elastic body, which is attached to the compressor, is disposed between the washer and the nut. A cylindrical member is provided at an inner circumference of the elastic body. As a result, when the nut is screwed, an axial force of the nut is transmitted to the washer via the cylindrical member, and the space between the washer and the head portion reduces, completing the attachment.

Abstract: A locking screw includes a head and a leg that has a thread formed thereat. The screw is screwed into a female screw hole, at which a female screw is formed. An angle formed by flank surfaces on a root side of a male screw is smaller than an angle formed by flank surfaces constituting the female screw whereas a vertex formed by the flank surfaces on the crest side of the male screw is an obtuse angle greater than 90°. Furthermore, the flank surface on the root side and the flank surface on the crest side are connected to each other via an arcuate surface. The width of the crest of the male screw is greater than the width of the root of the female screw mating with the crest of the male screw. The resultant locking screw can exhibit a locking function on the thread crest side of the male screw. The male screw can be efficiently brought into contact with the female screw-so as to-interfere therewith, thus securely inhibiting the male screw from being loosened.

Abstract: A novel loosening prevention threaded fastener in which a clearance side protrusion portion protruding radially outwardly toward a clearance flank surface of a female screw thread is formed on a clearance flank surface of a male screw thread, and the clearance side protrusion portion is constructed such that a tip end portion thereof interferes with the clearance flank surface of the female screw thread, in a state where a pressure flank surface of the male screw thread is in contact with a clearance flank surface of the female screw thread. At the time of screw fastening, the crest end portion of the clearance side protrusion portion is pushed to the pressure flank surface of the female screw thread so that it is deformed in a deflective manner to apply a predetermined contact pressure to a contact surface due to its elastic restoring force, thus providing resistance against a loosening direction.

Abstract: An assembly includes a first component and a second component. A sealant is disposed between the first component and the second component. The second component has a recess on a second surface of the second component opposite the first surface of the second component. A composite fastener has a threaded portion and a head portion. The head portion has a retention clip on a side of the head portion that faces the second surface of the second component when the threaded portion is received in aligned openings of the first component and the second component so that the retention clip is received in the recess when the composite fastener is turned. A method of attaching a first component and a composite component is provided.

Abstract: A mounting system for a shipping container or trailer floor having a plurality of apertures positioned to align with mounting holes of machinery having a first diameter to be mounted to the container floor, wherein the diameter of the container floor apertures are larger than the first diameter to allow a margin of error in the alignment with the machinery mounting holes. Non-circular threaded fasteners are located on the bottom surface of the container floor for receiving bolts for mounting machinery to the container floor, and a plurality of non-circular edged bases, each sized for receiving a non-circular threaded fastener such that the non-circular threaded fastener cannot rotate within non-circular edged base. The system also collects spilled machinery liquids for later removal.

Abstract: A bolt (10) for securing timber to any other material, comprises: a bolt head (101) with a series of spiked teeth (102) on its underside; a cylindrical bolt rod (103) extending from the bolt head (101) is threaded and split into two rods (105a,b) at its free end, so as to define a slot (106) therebetween. In use a user drills a hole through pieces of timber to be secured together, and hammers the bolt through the hole. The spiked teeth on the bolt head lock into the timber, securing the bolt at one end. At the free, split end of the bolt rod, a washer and nut are tightened onto the bolt. A cold chisel is hammered into the slot between the split ends of the rod, bending the ends outwards and thus preventing the nut from loosening.

Abstract: A method for the attachment of a bolt element to a component is described. The bolt element has a head part having a contact surface and a shaft part extending away from the head part, the shaft part having a tip provided at its end remote from the head part, the tip merging into a thread cylinder, optionally via a cylindrical region. The bolt element is pressed with the tip to the fore against the component and the tip is pressed through the component until the side of the component adjacent the head part of the bolt element enters to contact the thread cylinder and the tip thereby generates a hole in the component. The bolt element is subsequently turned so that the thread of the thread cylinder forms an internal thread in the wall of the hole. A bolt element is also claimed.

Abstract: An aircraft comprises a secondary support structure, and a nut plate engaging the secondary support structure. The nut plate includes at least one locator protrusion engaging a mounting hole in the secondary support structure to constrain motion of the nut plate along the secondary support structure. The nut plate further includes means for additionally constraining motion of the nut plate away from the secondary support structure.

Abstract: A fastener assembly including an internally threaded nut and an externally threaded screw for securing at least two materials together. The screw has an externally threaded shank and an enlarged head. The nut has a shank with a hole therein. The hole is internally threaded to threadingly receive the externally threaded shank of the screw. The nut has a diametrically enlarged head on an end of the shank opposite from an end with an opening of the hole. The enlarged head of the nut has a thickness not exceeding 0.10 inches. The underside of the enlarged head of the nut may have an annular recess formed therein surrounding the shank.

Abstract: There is provided a bolt support structure which can absorb displacement of a bus bar and prevent the bus bar from bending during fastening of bolt, having a bolt including a head portion and a shaft portion and a mount portion to which the head portion is mounted movable in an axial direction of the shaft portion. The mount portion includes a bottom and upper plates between which a large-diameter portion of the head portion is positioned. The shaft portion and a small-diameter portion of the head portion are passed through a notch of the upper plate. A gap between the bottom and upper plates is larger than the thickness of the large-diameter portion. After the head portion is mounted to the mount portion, the nut is attached to the shaft portion so that the bus bar and the terminal clamp are sandwiched between the head portion and the nut.

Abstract: An attachment system for two members includes a primary attachment device and a secondary attachment device for connecting the two members. When damage to the primary attachment device occurs, the secondary attachment device can be used to connect the two members without having to repair the primary attachment device.