Abstract: A nut and a method of attaching the nut to a work piece includes the nut having a top side with a threaded bore therein to receive a bolt and the nut having an underside with a skirt depending from the outer periphery thereof. A shank depends from the nut and extends into a hole in the work piece to which the nut is to be attached. A heat curable adhesive coats the shank and also coats the underside of the nut between the depending shank and the depending skirt so that upon curing of the heat curable adhesive the nut is adhesively secured to the work piece.

Abstract: A fastener-fitting (1) for a bolt (10) is anchored to a mineral slab (2) by cutting a cavity (5) into the slab (2) and trapping an elongate flanged-base (4) of the fastener (1) in the cavity (5) under a plug-element (8) of the slab-mineral. The flanged-base (4) fits within a conformal recess (15) in the underside (14) of the plug-element (8) to hold the fastener (1) against turning, with an internally-threaded tubular portion (3) of the fastener (1) extending through a bore (9) of the plug-element (8) for receiving the bolt (10) clamping an item (11) to the slab (2). The plug-element (8) is retained in the cavity (5) by adhesive, and has channels (20,21) for dispersal of surplus adhesive from the cavity (5).

Abstract: The present invention provides a kit for fixing a stem in a holder of a measurement apparatus, wherein the kit comprises a holder, which has a bore, and a stem, with a first end and a second end, wherein the bore has at least one vertical groove. The present invention furthermore provides a method for fixing a stem in the holder by means of adhesive.

Abstract: A fastener is provided for attachment to a workpiece by a friction stir process. The fastener includes a base having an underside adapted to seat upon the workpiece and a fastener portion attached to the top side of the base. An anchor portion projects from the underside of the base and is adapted to be rotated and advanced at high speed and inserted into the workpiece by friction stirring of the workpiece. The anchor portion is embedded in the workpiece upon cooling of the workpiece. The anchor portion has an indent in the surface thereof enabling the softened stirred material to flow into the indent and thereby mechanically capture the anchor portion within the solidified workpiece.

Abstract: A rock-dowel has a dowel shank has a diameter of about 20-22 mm, and a threaded end at the head or proximal end of the dowel. Three groups of projecting mixing vanes are spaced along the shank. A first group of vanes at the tip project at least 2.5 mm and preferably no more than 4 mm from the shank. The second group of vanes which project from the shank by a lesser degree than the first group, are defined in a central portion of the shank spaced from the first group. The third group of vanes which project from the shank by a lesser degree than the second group, are defined adjacent the threaded portion of the shank spaced from the second group. In use when inserted into a pre-drilled hole containing a two-part encapsulating resin and spun, the rock-dowel can thoroughly mix the two part resin encapsulating resin and force the resin casings into the back of the pre-drilled hole.

Abstract: A sprue dowel has a radially projecting embeddable portion (12) and an attachment portion (21) formed as a hollow cylindrical shaft (24) provided with a plurality of spaced from each other, furrowed retaining projections (26, 27) formed on an outer circumference of the shaft and extending parallel to a longitudinal axis (25) of the sprue dowel (11).

Abstract: A plastic insert for concrete structures includes a barrel for receiving a threaded fastener. According to one embodiment, the insert includes a housing at a distal end receiving an internally threaded member for engaging the threaded fastener. The insert includes bar-engaging members at the distal end for contacting concrete-reinforcing bars of the concrete structure. The insert also includes a bar-engaging member at the proximal end including a retainer defining a substantially semi-circular channel for receipt of a U-shaped portion of a bar. According to another embodiment, the insert includes a base at the distal end extending outwardly from the barrel to define an anchoring surface oriented perpendicular to the barrel axis. Longitudinal ribs on the barrel include segments arranged in series. Each segment of the rib extends radially to a distance that decreases with each succeeding segment such that each segment defines a bearing surface.

Abstract: It is an object of the present invention to make it possible to install an anchor bolt while securing the pull-out strength of the anchor bolt even when the anchor bolt installation position encounters a reinforcement in concrete. An anchor bolt according to the present invention includes a first anchor bolt 2 having an embedded portion shorter than a reinforcement covering margin, a second anchor bolt 7 having an axis at a position deflected from an axis of the first anchor bolt 2, and a coupling member 5 integrally fixing the first anchor bolt 2 and the second anchor bolt 7. Further, in an installing method of an anchor bolt according to the present invention, when a first anchor hole bored at the anchor bolt installation position encounters a reinforcement, a second anchor hole is bored at a position in a direction other than the arrangement direction of the encountered reinforcement, to thereby install the anchor bolt according to the present invention.

Abstract: An inset panel fastener anchors into honeycomb substrates employed in the aircraft industry. The inset panel fastener provides significantly increased load carrying capabilities with a simple inexpensive construction. The inset panel fastener includes a plastic casing and a central floating fastener element. The casing includes a body, disk and cap. The body is generally barrel shaped including a central chamber for holding the fastener element which is preferably a female fastener. The disk radially projects from the top of the body and includes a fill hole and vent hole. Meanwhile, the cap engages and covers the bottom of the barrel shaped body. The cap is affixed in place using a weld, such as a sonic weld.

Abstract: An open-end blind rivet (210) comprises a headed mandrel (218) with a substantially tubular rivet mounted thereon with a flowable sealant (250) disposed between the mandrel and the rivet whereby setting of the blind rivet compresses the sealant between the head (216) of the mandrel and an inner surface of the rivet to form a seal therebetween.

Abstract: A fastener is configured for use in the manufacture of molded plastic components that will be subsequently attached to other components by the fastener. The low profile head portion of the fastener has a rounded contoured and convoluted top surface to facilitate the flow of plastic material around the head portion during the molding process. The underside of the head portion is formed with a square face surrounded circumferentially by circumferential land surfaces that provides a high pull-out force resistance for the fastener. The square face on the underside and convoluted top surface of the head portion provides a high spin-out torque resistance without sacrificing the pull-out force resistance. The rounded edges of the head portion are compatible with molding processes to allow the flow of plastic material to fully encapsulate the head portion within the molded plastic component.

Abstract: Method and apparatus for forming cast members. Steps are provided in the cast member by sliding mounting flanges of hollow plastic step inserts into slots provided in the inner mold shell. The cast material is then poured into the mold. Once the cast material has set, the cast member is withdrawn from the mold assembly. The step insert mounting flanges are broken away, leaving hollow step inserts into which manhole steps are force-fittingly mounted. The inserts are provided with integral cover tabs which cover larger slots provided to facilitate insertion of the step inserts, preventing leakage of the cast material into the mold assembly. Integral cover tabs are similarly provided on enforcement ring support members mounted in a similar fashion to insertion slots provided on one of the mold members to cover larger width slot portions to prevent seepage of cast material. Similar seals are provided by cylindrical-shaped inserts for use in wetcast and drycast fabrication methods.

Abstract: An insert part (1) for insertion in an opening in a wall has a neck (7) to pass through the opening and a flange (4) arranged on the neck (7) and comprising a depression (5) on the under side facing the neck (7). The depression (5) is bounded on the outside by an elevated circumferential edge and contains a body (17) of adhesive capable of being brought into a flowable state by heating. To secure the insert part in the opening of the wall, catches (8) are attached to the neck (7). The body (17) is of such size that it is completely accommodated by the depression (5), and the insert part (1) is of such conformation that, in the installation position in which it is secured by the catches (8) in the opening of the wall, the circumferential edge (6) of the flange (4) is firmly pressed into contact with the wall.

Abstract: A resin embedded rock bolt dimensioned to be inserted into a hole drilled in a rock body with a clearance fit between the bolt and hole, the bolt having a shank which is plastically deformed by the application of an eccentric shear force to form a paddle protruding beyond the undeformed exterior of the shank prior to deformation, the paddle being shaped to mix the resin.

Abstract: The present invention relates to a fluid connector, comprising a shaft having at least one solid shaft element and a plurality of connector surfaces, wherein the plurality of connector surfaces includes a surface with a plurality of threads and a plurality of grooves.

Abstract: A blind rivet system including a number of parts to be joined that have aligned holes. A tubular rivet body is disposed in the aligned holes and includes a rivet head portion and a sleeve portion. The head portion and sleeve portion include a longitudinal bore. A mandrel having a head portion greater in diameter than the bore and a shaft portion is disposed within the longitudinal bore. An adhesive is disposed in an annular space defined by the interior surface of the bore and an exterior surface of the shaft portion. An installation tool having a seal intersects with the rivet head portion such that when the head portion is drawn within the bore during installation, the adhesive is maintained within the tubular rivet body and extruded from the annular space to a region between faying surfaces of the parts to be joined.

Abstract: A fastening system for connecting plastic members to each other via a metal stud having a head and a shaft. The plastic members include a plastic member and a plastic parent member. The plastic parent member is affixed to a head of the metal stud. The shaft of the metal stud is disposed in the plastic member wherein a plastic clip is forced onto to be connected upon the threads of the shaft of the metal stud, from which connection the plastic clip is rotatively removable. Of course, the plastic clip could be formed integrally with the plastic member, and the plastic member could be adapted to carry, or have connected thereto, additional components.

Abstract: A yielding rock bolt arranged to be inserted into a hole in a rock surface. The rock bolt comprises a shaft having a widened portion adjacent a first end thereof, arranged, in use, adjacent an inner end of the hole. The rock bolt also includes an anchor member arranged to be secured within the hole in the rock surface. A longitudinal bore is provided in the anchor member to receive a second end of the shaft, the longitudinal bore being of a diameter slightly less than that of the widened portion of the shaft. A rock face engaging means is provided adjacent a second end of the shaft to secure the second end of the shaft adjacent the rock face. Movement of the rock face causes the widened portion of the shaft to be pulled through the longitudinal bore in the anchor member.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetic energy absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: A rivet and method for riveting metal members, and particularly, metal sheets is disclosed. The apparatus includes a rivet assembly for driving a piercing rivet into stacked metal sheets and a die for assisting in supporting the sheets during driving of the rivet and for assisting in securing the rivets to the sheets. The rivet of the invention includes an adhesive that is forced through passages in the rivet for assisting in fastening the rivet to the sheets and for assisting in fastening the sheets to each other with greater strength.

Abstract: This invention provides a design of an adhesive encapsulated blind rivet for joining an assembly of overlying parts having an accessible side and an inaccessible side. The rivet comprises a rivet head and tubular rivet body. A mandrel is inserted through the open end of the tubular rivet body and through a mandrel hole in the rivet head. A mandrel head engages the end of the tubular body. The tubular body is filled with a mass of latent adhesive around the mandrel. The rivet body is longer than the thickness of the parts to be joined to accommodate a substantial amount of adhesive for expulsion through holes in the rivet body located within the thickness of the assembled parts. The portion of the rivet body extending beyond the blind side of the assembled parts is weakened in a pattern of corrugations or other bands for folding of the end of the tubular body in setting the blind side of the rivet and expelling the larger quantity of adhesive against and between the riveted parts.

Abstract: A multi-part, self-drilling, self-tapping fastener with on board, internal chambered adhesive for, permanently connecting a plurality of parts at an overlaid joint thereof having access from one side. The fastener, that drills its own hole through the joint and taps its own threads for mechanically connecting the parts and subsequently extrudes the adhesive under pressure for optimized joint adhesive infiltration and bonding area for maximizing joint strength. The mechanical fastener holds the parts together eliminating the requirement for holding with auxiliary fixtures allowing the parts to be finished and painted during adhesive cure.

Abstract: Mechanical and adhesive charged blind fasteners have an annular one way flat or O-ring seal mounted at one end of a cylindrical rivet body sealingly engaged with an axially extending mandrel stem to provide a torodial chamber. The body has radial adhesive-extruding openings therethrough around which a vacuum may be established for initial adhesive charging purposes. For charging, the seal is deflected by the force of a flow of adhesive from a supply responding to the establishment of a positive pressure differential between the supply and the exterior of the body. With the torodial chamber opened, viscous adhesive readily flows therein from the supply. After being filled, the vacuum is terminated and the seal naturally recovers and closes the body to confine the adhesive therein. Adhesive charging can be achieved by other mechanisms that impress a load on the supply to effect seal opening.

Abstract: A method and fastener for distributing an anchoring material and securing abutting honeycombed panels in a generally perpendicular alignment. The fastener is provided with a pointed tip to penetrate into undrilled portion of the inner cellular structure of one of the panels. The hollow fastener allows for the injection and distribution of an anchoring material into the ruptured cell core and into predrilled bores in the first panel.

Abstract: A connection, and a method of forming a connection, that adhesively fixes and bonds a fastening element or anchor in bore hole, particularly in a soft substrate or substrate with an interior cavity or void where the anchor is to be set in vertical wall or set upwardly into a ceiling. To make the connection, an accessory is used that has the form of a sleeve having a closed or partially blocked insertion end and an open anchor receiving end and apertures running along its length. The accessory helps to ensure that the anchor is surrounded with mortar or adhesive, and the mortar or adhesive contacts the wall of the bore. The cylindrical wall of the sleeve has apertures along its length. The sleeve can be formed with larger apertures formed near the anchor receiving end of the sleeve and smaller apertures formed near the insertion end of the sleeve. The sleeve is formed by inserting an open-ended cylindrical mesh tube into a frame that holds the tube along its length at a select location.

Abstract: A fastening device on a support panel, having at least one structural element, is to be designed in such a way that under predefined tightening of the fastening device on the support panel no lasting damage occurs. To achieve this, a holding part of the fastening device has a step at a point of connection with the support panel, and a spacer of the fastening device has a double bushing having an outer sleeve and an inner sleeve. The two sleeves are positioned with respect to each other in such a way that when the fastening device is tightened the inner bushing comes into contact with the step and the indentation of the support panel into the spacer is limited. The fastening device is preferably intended for use in the automobile industry.

Abstract: A method of securing a screw-receiving plug in an over-sized hole preformed in a fixture comprises the steps of: (a) providing at least one piece of a loosely-woven fabric carrying consolidated thereon a quick-setting filler material, which fabric piece is sized to envelop at least circumferentially the plug intended to be used; (b) enveloping the plug circumferentially in the fabric piece; (c) activating the filler material; and (d) inserting the enveloped plug in the hole in a manner such as to ensure filling of the hole by the enveloped plug. On setting, the activated filler material and fabric restrain the plug against rotation when a screw is being driven into the plug thereby to secure the screw in the fixture. The preferred filler material is plaster of Paris.

Abstract: A threaded hole with damaged threads and a repair apparatus including an elongated, flexible strip material, a portion of the strip material inserted between the threads of the threaded hole and the fastener. The strip material characterized as flowable under compressive stress between the threads of the threaded fastener and the threaded hole, and having substantial rigidity as to engage the fastener within the threaded hole.

Abstract: Mechanical and adhesive charged blind fasteners have an annular one way flat or O-ring seal mounted at one end of a cylindrical rivet body sealingly engaged with an axially extending mandrel stem to provide a torodial chamber. The body has radial adhesive-extruding openings therethrough around which a vacuum may be established for initial adhesive charging purposes. For charging, the seal is deflected by the force of a flow of adhesive from a supply responding to the establishment of a positive pressure differential between the supply and the exterior of the body. With the torodial chamber opened, viscous adhesive readily flows therein from the supply. After being filled, the vacuum is terminated and the seal naturally recovers and closes the body to confine the adhesive therein. Adhesive charging can be achieved by other mechanisms that impress a load on the supply to effect seal opening.

Abstract: An arrangement for feeding soldering material into a space between a bolt and rock includes a sleeve-like nozzle which can be pushed tightly against a feed chamber on the rock bolt so that a feed hole in the feed chamber is connected to the inner space of the nozzle. The arrangement further includes a device for placing the nozzle around the feed chamber so that soldering material can be fed from the inner space of the nozzle into the drill hole.

Abstract: An anchor having an internally threaded first opening, a body, a first end on the body threaded to fit the first opening, a second end on the body, configured to fit an opening in the wall of the mold for extending a first length of the body into the wall, a second opening in the second end extending toward the first end, and a protrusion in the second opening configured for receiving a tool for transferring rotational force about an axis through the first end and the second end for withdrawing the body from the anchor. The protrusion is recessed the first length from the second end. An annular member extends radially from the body, one axial end of the protrusion is at the axial position of the annular member.

Abstract: A mine bolt for a bore hole in a roof of a mine. The bolt comprises a tube having a cross-sectional diameter less than that of the bore hole, a hollow interior, a first end, and a second end having an opening in communication with the hollow interior. The bolt comprises a flange disposed adjacent to the second end. The bolt can include an anchor means implaced in the tube and an elongated member disposed in the tube and extending from the anchor means out the tube to the second end. A method for supporting a mine roof. A method of forming a mine bolt.

Abstract: Two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a batten bar coated with a thermoplastic coating on its top surface; a plurality of openings in the batten bar; and fasteners positioned in the plurality of openings for securing the batten bar and one thermoplastic roof membrane to the underlying roof deck.

Abstract: A threaded fastener has a self-drilling tip and threads holding a microencapsulated, substantially dry, self-curing adhesive. The tip is distanced from the threads by at least 0.025 cm, and possibly by at least 1 cm, and the tip comprises a pinch point configuration. The adhesive may comprise first and second parts that harden when mixed. Such a fastener can be used to assemble a structure having a composite wall, possibly comprising fiberglass, by providing such a fastener and screwing the fastener into the wall. Such a fastener is particularly advantageous if the structure is a boat.

Abstract: It is an object of the present invention to make it possible to install an anchor bolt while securing the pull-out strength of the anchor bolt even when the anchor bolt installation position encounters a reinforcement in concrete. An anchor bolt according to the present invention includes a first anchor bolt 2 having an embedded portion shorter than a reinforcement covering margin, a second anchor bolt 7 having an axis at a position deflected from an axis of the first anchor bolt 2, and a coupling member 5 integrally fixing the first anchor bolt 2 and the second anchor bolt 7. Further, in an installing method of an anchor bolt according to the present invention, when a first anchor hole bored at the anchor bolt installation position encounters a reinforcement, a second anchor hole is bored at a position in a direction other than the arrangement direction of the encountered reinforcement, to thereby install the anchor bolt according to the present invention.

Abstract: An anchor, which is secured in a bore with a mortar, has an anchor member (12) located in the bore, a load application member (11) projecting out of the bore, at least one mixing element (13, 13′) for mixing components of the mortar, a drive element (20, 20′) provided on the anchor member (12) for setting in motion the at least one mixing element (13, 13′), and a trigger (21) for actuating the drive element (20, 20′) which automatically sets in motion the mixing member (15) upon actuation of the trigger (21).

Abstract: A friction stir rivet is rotated and driven through a first fusible workpiece into an engaged second fusible workpiece, causing local portions of the first and second workpieces to plasticize. A slideable cap contacts the exposed surface of the first workpiece shortly after the process begins. The cap acts as a retaining element limiting plasticized material from escaping during the process. As the rivet is further driven into the members the cap slides up the rivet and actuates an angled stirring member to increase the stir radius around the body of the rivet. Once the rivet is driven into the first and second workpieces, rotation is stopped and the plasticized material cools and hardens around the rivet, creating a weld joining the workpieces and encompassing the rivet, which provides additional mechanical strength.

Abstract: A lockbolt includes a bolt head, a shank, a locking portion, a predetermined breaking point, and a break-away portion. The locking portion includes a knurled surface having knurling peaks between intersecting knurling grooves that extend in a direction with an axial component, e.g. spiraling helically. A sealant on two workpieces smears onto the knurled surface when the bolt is inserted in a hole therein, but does not need to be removed. A locking collar is swaged onto the locking portion to secure the workpieces between the head and the collar. The sealant is distributed as a thin layer to provide a seal and an adhesive bond between the collar and the knurled surface. Excess sealant is squeezed-out axially, without forming encapsulated pressurized sealant pockets and without hindering the swaged engagement of the locking collar onto the knurling. Then the break-away portion is broken-off at the breaking point.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetic energy absorptive component for absorbing electromagnetic waves and converting wave energy to heat, an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: A mobile system for manufacturing and installing rock reinforcing members in mining and tunnel construction applications where a plurality of holes are drilled into the rock and each hole receives a reinforcing member and grout. The reinforcing member can be steel strand or some other suitable material. The system has a plurality of cooperating devices, all mounted to a mobile self-propelled platform. The devices comprise a spool of reinforcing material, a motivating device for drawing material from of the spool through the system, a measuring device, a crimping device to give the steel strands a corrugated shape, an articulating arm with a guide head to guide the material into the drill hole and a cutter to cut the material into strands of desired length. A plurality of strands can be installed in a given drill hole. The system also includes apparatus for grouting the drill holes using either a cementacious grout or a polyester resin grout. Methods of making and grouting the reinforcing member are disclosed.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetic energy absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: A method and fastener for distributing an anchoring material and securing abutting honeycombed panels in a generally perpendicular alignment. The fastener is provided with a pointed tip to penetrate into undrilled portion of the inner cellular structure of one of the panels. The hollow fastener allows for the injection and distribution of an anchoring material into the ruptured cell core and into predrilled bores in the first panel.

Abstract: A sealable fastener for insertion into an fastener opening in a receiving structure includes a fastener shank including a shank first end having a shank first end wall and a shank second end having a shank second end wall, a shank side wall extending between the shank first end wall and the shank second end wall and a circumferential channel recessed into the shank side wall; and a sealant delivery passageway having a delivery passageway entry port in the shank second end and extending to a delivery passageway exit port opening into the circumferential channel; so that a flowable sealant placed in the fastener opening is drivable into the delivery passageway entry port as the fastener shank is inserted into the fastener opening, so that the sealant flows through the sealant delivery passageway and exits through the delivery passageway exit port and flows into and around the circumferential channel, creating a circumferential seal between the fastener shank and the fastener opening in the receiving structure.

Abstract: A metal plane jointing structure includes a metal plate, a metal joint nut having a periphery flange thereon, and a layer of adhesive glue positioned therebetween. The method of making the structure includes formation and insulation of the metal plate and the metal joint nut, the de-scum process at the joint positions of the metal plate and the metal joint nut, glue coating at the joint positions of the metal joint nut and the metal plate, curing the metal plate and the metal joint nut in the oven after both of them are being positioned, and cooling the jointed metal plate and the metal joint nut at room temperatures.

Abstract: A nut to be combined to a synthetic resin article includes a body having threads provided on an inner circumference thereof and a melt-combination member provided on an outer circumference of the body, thereby melt-combining the body to the synthetic resin article. Hence, a combination of the nut and the synthetic resin article is strengthened, the synthetic resin article is protected from being cracked, and the quality of the synthetic resin article is improved.

Abstract: A method and apparatus for restricting rotation of a threaded fastener, the apparatus including a bracket member having a securing segment and an extending segment that are integrally linked wherein the securing segment forms a recess and the extending segment forms at least one restraining surface wherein a bonding material that solidifies and remains flexible upon curing is provided within the recess and, with the threaded fastener received within an aperture, the bracket member is positionable such that one end of the threaded member is receivable within the recess and within the bonding material prior to curing and the restraining surface contacts a surface of a receiving member to restrict motion of the bracket member about the aperture.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetically absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: A seal structure between a first member that has a recessed section and a second member that has a protruding section on its rear surface and is provided on its front surface with an elastomer covering layer so that the protruding section is inserted into the recessed section. The second member is provided with a through-hole that passes through the second member and is formed in positions located at a circumferential edge of the protruding section of the second member. The second member is further provided with a tubular covering layer of an elastomer, the tubular covering layer being formed on the outer circumference of the protruding section so that the tubular cover layer is continuous of the covering formed on the front surface of the second member via the through-hole.

Abstract: A screw connection, which is intended in particular for plastic members comprises a screw and an insert member which is to be nonrotatably fitted into one of the components involved in the connection and which receives the screwthread of the screw in an axial passage. In accordance with the invention the axial passage of the insert member is of a smooth-walled, that is to say screwthread-free, configuration and the screw has a screwthread, which cuts or grooves the female screwthread of the insert member. The screw, like the insert, can comprise an aluminum alloy, in which case however the alloy of the screw is of a substantially greater hardness than that of the insert member.

Abstract: A fastener system for adhesively coupling non-threaded components comprises, in combination a rigid bolt. The bolt has a head externally. The bolt has a shaft internally. The head has a generally hemispherical exterior end with a cental axis. The head also has a generally planar interior end. The head further has a top and a bottom. The shaft is in a generally cylindrical shape with a central axis. The fastener system also comprises a nut. The nut has a generally hemispherical exterior end. The nut has a generally planar interior end. The nut further having a top and a bottom. The exterior end of the nut has a radially circular flat region. A recess is provided in the circular flat region of the exterior end. The recess is adapted to receive the shaft. An adhesive provides a secure coupling between the nut and bolt.