Abstract: A hook mounting system of a unibody structure with three platforms that face an angled hole. The hook system includes nails adapted to be particularly suitable for mounting the hook and platform deformable inserts to receive the nails. The system is adapted for a rod hanging assembly. The system includes a nail having a non-circular shank portion and a head portion.

Abstract: A nail having an offset head is configured with a multi-step support gusset formed integrally between an undersurface of the offset head and a superior portion of a shank. The head of the nail is relatively thin, and the shank is positioned radially off center of the head. A first portion of the gusset defines an angle relative to the shank axis and the second portion of the gusset defines an angle relative to the shank axis different from that of the first portion. The support gusset reinforces the junction of the shank with the head, supports the toe of the head, and distributes the force of a load on the head through a longitudinal axis of the shank, preventing the toe from bending or yielding and prevents the shank from yielding to the stresses of the load applied.

Abstract: According to an aspect of the present disclosure, a biomechanical fastener is provided and includes a backspan defining an upper surface, a lower surface and a pair of side surfaces; at least a pair of legs depending from the backspan; and at least one contact pad extending from the lower surface to the upper surface of the backspan. At least one of the pair of legs contacts at least one of the contact pads upon a formation thereof.

Abstract: A method for detecting the presence of corrosive material in drywall utilizing a testing device having a metal pin for insertion in the drywall, where the pin forms a visible layer when it reacts with corrosive materials in the drywall.

Abstract: A method is described for establishing a nail connection between two components as well as a nail therefor. The nail is driven through the non-prepunched components in the joining area at a high speed such that the nail tip fully penetrates both components and forms a toric-shaped material bulge in the nail-head-side component, which protrudes into a circular groove of the nail head, and a crater-shaped material bulge is formed in the component facing away from the nail head, which protrudes in the opposite direction.

Abstract: Disclosed is a fastener comprising a central elongate shank extending between first and second ends. The first end of the shank has a tapered point. The second end a head has an annular shoulder disposed towards the second end. The fastener further comprises an opposed pair of spines extending helically along the shank and a plurality of hooks extending from each of the pair of opposed spines. Also disclosed is a protrusion extending axially with the shank from the head deformable into an anti-friction washer upon impact by a fastener driver.

Abstract: The Butterfly Push-Pull Pin, also referred to as a force advantageous push-pull pin in this application is a practical fastener used to support penetrable materials on supporting material such as a bulletin board, notice board, tack board, wall or other element penetrable by a push pin. In the Butterfly Push-Pull Pin, two broad, sloped, opposing sides of a polygonal handle are grasped to push the pin in. Two other broad, sloped, opposing sides of the polygonal handle are used to pull the pin out.

Abstract: An apparatus for protecting and fastening a wire to a mounting object includes a molded unibody having a first section connected to a second section, wherein the first section includes a surface that operates to receive a fastener, such as a staple, therethrough to secure the wire in place against the mounting object, and the second section protrudes from the surface of the first section and extends away from the surface of the first section for a user to safely hold the first section in place as the user mounts the apparatus and the wire to the mounting object.

Abstract: A fastener for driving into a substrate has a head having an upper surface and a lower surface, a penetrating tip and a shank extending from the lower surface of the head to the penetrating tip. At least one deformable feature is formed on the head. The deformable feature is configured to absorb energy and to deform. When a driving element is driven onto the head to drive the fastener into the substrate, the deformable feature absorbs energy and is deformed as the head contacts the substrate.

Abstract: A full-round head nail having an offset head is configured with a gusset formed integrally between an undersurface of the offset head and a superior portion of a shank. The head of the nail is relatively thin, and the shank is positioned radially off center of the round head such that no heel is formed at a point tangential to both the head and the shank. The gusset has a lofted surface tapering radially from a roundness at the zero heel to a taper at the toe. The gusset reinforces the junction of the shank with the head, supports the toe of the head, and distributes the force of a load on the head through a longitudinal axis of the shank, preventing the toe from bending or yielding and prevents the shank from yielding to the stresses of the load applied.

Abstract: A fastener, such as a nail or staple, includes a fastener body having an impact surface and a plug of filler material joined to the impact surface. The plug of filler material fills the hole made by the fastener body when the fastener is driven into a workpiece. Many types of fasteners can be used, such as nails and staples. In the case of a nail, the plug of filler material would be joined to the nail head. In the case of a U-shaped staple, the plug of filler material would be joined to the cross member joining the staple legs. The filler material can be a wide variety of materials such as wood putty, acrylic sealant, fiberglass resin fillers, epoxy adhesives, and plastic.

Abstract: Connectors configured for providing composite wall structures with high composite action. In one embodiment, the connectors comprise a body having two spaced-apart sidewalls and a web portion extending therebetween, having a thickness that is less than the diameter or width of the sidewalls in the same dimension. The body also includes a tapered end comprising a single elongate edge or a plurality of spaced-apart edges or pointed ends at one end for facilitating penetration of the connector through layers of the composite wall during manufacture. An orienting protrusion orients the connector at a predetermined depth within the layers of the composite wall during manufacture. One or more structures anchoring anchor the connectors of the invention to layers of structural material placed on opposing sides of an insulation layer of the composite wall.

Abstract: A novel fastener comprises a head having a recess for receiving a rotary driver, a shank having knurls defined by generally helical grooves and intersecting generally annular grooves, wherein a plurality of the knurls include a lateral cutting edge, and a generally pointed tip. Another novel fastener comprises a head having a recess for receiving a rotary driver, a shank having a predetermined diameter small enough so that the head will break away from said shank upon application of a predetermined torque, and said shank having knurls defined by generally helical grooves and intersecting generally annular grooves.

Abstract: The invention relates to a fixing element that essentially consists of a head (1) and a shaft (2) and is preferably configured as a nail or screw. The aim of the invention is to provide said fixing element in such a way that it can be easily assembled and adjusted and preferably adjusted in the horizontal level between several fixing elements. To this end, the head (1) is provided with a variable lifting height (h) and preferably consists of an upper head component (10) and a lower head component (11). In a preferred embodiment, the lower head component (11) is configured as a cam and the upper head component (10) having a slightly protruding edge is adapted in the cross-sectional form.

Abstract: A surgical fastening system includes a fastener having a plurality of individual fastener pairs each having a piercing element with a pin that pierces the tissue to be repaired and a receiver portion that interlocks with the pin of a corresponding piercing element. A fastener dispenser holds the piercing elements and receiver elements in relative juxtaposition and in a predetermined geometric configuration, such as a circle. After the tissues to be joined are positioned between the piercing and receiving elements held in the dispenser, the dispenser is adjusted to draw the elements together capturing the tissue therebetween. The dispenser then pushes the piercing elements through the tissue and into the receiving elements causing the elements to interlock. Because the anastomosed junction is formed by a plurality of independent pairs, the junction retains flexibility. When used to anastomose a tubular organ, the fastener allows radial expansion of the organ permitting peristalsis.

Abstract: The push-pins of the present invention are defined by at least one pin section and an integral, at least partially corrugated finger grasping section, and are formed from a single piece of rigid material. Methods for the production of such push-pins include providing a piece of substantially flat rigid material and a press, and employing the press to stamp portions of the material to create a plurality of push-pins therefrom.

Abstract: An earth anchor for a pole that includes a base, a spike, and attaching apparatus. The base has a lowermost face for contacting the earth, an uppermost face opposite to the lowermost face, and a longitudinal axis. The spike is for insertion into the earth, and depends from the lowermost face of the base. The attaching apparatus is for engaging a pole, and is disposed on the uppermost face of the base. The base is disk-shaped with a circular periphery for providing a blunt round edge that eliminates corners when tipped on which a player could fall and be injured, and is wide for leaving enough room for the pole to still be pushed into the earth using foot pressure. The attaching apparatus includes a stop boss disposed on the uppermost face of the base, along the longitudinal axis of the base, which centers the attaching apparatus for allowing the pole to have identical stability in all directions.

Abstract: Angled warp spikes enable secure attachment to the steel flooring of a railroad boxcar. Such flooring includes transverse slots with a curved depth profile. The warp spikes are designed to deform or warp as they are driven into a flooring slot and conform to the curved depth profile. Tiedown fixtures fabricated of steel plate can be attached to the floor of a boxcar by warp spikes driven through elongated openings in the fixture into slots in the boxcar flooring. Tiedown fixtures used with warp spikes provide a boxcar tiedown system to which tiedown load carrying members, such as cables, chains, braces and struts can be connected.

Abstract: A push pin is provided for securing pieces of paper, photographs, postcards, posters and similar items to a support surface without puncturing or otherwise damaging the item. The push pin includes a body portion and a pin. In a preferred embodiment, the body portion defines a raised circumferential portion to facilitate insertion and withdrawal of the push pin. In one embodiment, the push pin includes a linear spring extending from the body portion to a distal end. Advantageously, the distal end of the linear spring at least partially contacts the item and urges the item towards the support surface. In an alternate embodiment, the body portion defines a groove defining an elongate member extending from the body portion to a distal end. Advantageously, the distal end of the elongate member at least partially contacts the item and urges the item towards the support surface without piercing or otherwise damaging the item.

Abstract: A method of fastener identification for traceability of manufacturing information of an individual fastener, is achieved by applying a code to the fastener. The fasteners to be identified typically are formed of hardened materials such as steel. A die cast, forged or pressed roll stamp or forge stamp is thus used to apply the code and is formed with a raised stencil of one or more characters or indicia. Multiple lots of a certain fastener typically are manufactured in a given time period, such as a year, thus requiring a different code to identify each fastener lot. Numbers of lots and sizes of individual lots for a given time period are difficult to predict for a fastener producer, thus risking waste if multiple customized stamps are used to identify the lots. A universal stamp having a single indicia stencil is utilized to identify all lots of a certain fastener in a given time period, by removing selected ones of the stencil characters from the universal stamp for each different lot.

Abstract: A nail having a nail head with a top surface having a plurality of protuberances formed thereon, a nail body extending from a bottom surface of the nail head, a nail tip formed at an end of the nail body opposite the nail head, and a ring portion formed between the nail head and the nail body. The ring portion has a plurality of indentations formed thereon so as to allow separation of the nail head from the nail body upon a twisting force applied to the plurality of protuberances. The nail tip has a plurality of sliced sections formed thereon. The sliced sections have differing surface areas. The sliced sections have a generally diamond-shaped configuration. A plurality of slanting ribs extend along a length of the nail body at an acute angle relative to a longitudinal axis of the nail body.

Abstract: A system for providing a visual body-length indicator for a group of mine roof stabilizers of various, unique lengths includes providing each stabilizer with a tubular body and a slot along the body. A bottom annular ring having a ring gap formed therein is attached to the body, with the ring gap and body slot being oriented in a unique relation for each unique body length, providing a visual indicator of body length that can be observed from a distance, even after the stabilizer is installed into a drill hole in a mine roof.

Abstract: A method to surgically promote the fusion of bone segments together in order to correct bone malformations of the finger or toe involves making an incision in the finger or toe to expose the malformed digit; removing a portion of the malformed digit; forming a bore through each digit from the malformed digit through a tip of the finger or toe; forming a hole, that is aligned with the bore, in a proximal digit; enlarging the diameter of the bore relative to the hole; and inserting a bone screw having a head portion into the bore through the tip of the finger or toe and threadably attaching the bone screw within the hole in the proximal digit until each distal digit is compressed between the head portion of the bone screw and the proximal digit. A tracker member, having a terminal sleeve portion adapted to receive a tip of the bone screw, is provided to guide the screw into the bore through the tip of the finger or toe.

Abstract: A means for temporarily securing a tarpaulin or like fabric having a series of grommeted holes about its periphery. The means comprises a double headed nail with an apron or apron frictionally engaging the nail immediately below the second or lower head.

Abstract: A new Double-Ended Nail Driving System for securing two boards together without scarring a surface of the boards by securing a conventional fastener into the surface of the boards. The inventive device includes a double-ended nail having a center flange, an elongated cylinder having an elongated cavity projecting into an end for removably receiving an end of the double-ended nail, and a lower flange attached to the end for engaging the center flange of the double-ended nail. The lower flange engages the center flange thereby allowing the user to tap upon an opposite end with a conventional hammer thereby penetrating the double-ended nail into the board within dulling a sharpened end of the double-ended nail. The present invention further reduces the amount of scarring normally associated with conventional fasteners securing the two boards together.

Abstract: Wallboard having a skin outer surface is attached to wall and ceiling framing by nails having heads with a convex bottom surface and a concave top surface. A driver blade is used having an outer end with a shape complimentary to the concave nail top surface and a diameter which is larger than the nail head such that no sharp edges are presented to the wallboard skin around the nail head, thereby avoiding cutting the paper skin.

Abstract: A power actuated fastener assembly for use with a power actuated gun having a broad bearing surface and a raised portion for holding a stud and raising the pointed end above the bearing surface. The raised portion or cone shape forms a gap that widens from the point of the shank to the bearing surface. This creates a stable fastener assembly and raises the pointed end of the stud at or near the bearing surface of the fastener assembly. The fastener assembly can be driven in a single step with a power actuated gun without the necessity of partially driving the fastener assembly into the structure being fastened into a masonry surface. Additionally, the raised portion or cone shaped portion automatically strips away or breaks the plastic fluting commonly associated with such fasteners and is often undesirable compressed under the head of such fasteners. Thereby, a safer, more efficient power actuated fastener is obtained.

Abstract: An improved nail member having first and second heads on a shaft with two ends. One of the ends being defined by the first head and the other end has a pointed termination. A weakened portion is positioned between the second head and the pointed end, substantially closer to the second head. The weakened portion permits a user to readily break off most of the shaft including the pointed end. When the nail member is passed through an opening in an electrical box it keeps it in place while at the same time permits ready detachment of the shaft.

Abstract: An improved roofing nail having a cap which is held captive near the nail point for the purpose of attaching roofing felt to a wooden roof. The nail point extends slightly below the lower surface of the cap allowing the point of the nail to be manually engaged into the roofing felt. The cap positioned at the end of the nail provides support to hold the nail in an upright position until the nail is driven through the cap and into engagement with the roof substructure, after the hand of the user has been removed.

Abstract: A decorative cover for the head of a nail and other simlar fasteners used in the carpentry and upholstery trades. Ordinary nails can prove unsightly when used on particular works. The invention is a decorative cover which utilizes a slot to attach the cover to the head of a standard nail. The decorative cover is of any shape and color desired, thereby offering limitless design possibilities. After attachment of the invention to the nail head, the nail is driven into the body of work with no adverse effects on the cover. The invention, then, allows the aesthetic characteristics of a body of work to be enhanced without sacrificing the utilitarian characteristics of the nail.

Abstract: A method and apparatus for graphically indicating the dimensions of fasteners on the fastener itself. According to a preferred embodiment, graphical indica are disposed on the head of a nail to visually indicate the length and/or gauge of the nail. Such indicia may include numerals and other shapes or objects. Preferably, one or more hatch marks are disposed about the face of the nail in the form of a clock face and representing such dimensions.

Abstract: A barbed light weight concrete fastener and plate comprises a fastener with a head and two bendable legs. Each leg has a barb and a bump protruding therefrom. The fastener is pushed through a base ply and into a roof deck of cementitious material. The legs diverge to capture a concrete wedge between them. The barbs dig into the concrete wedge to increase resistance to a pullout force. The bumps create pressure points with the cementitious material that further resist pullout. A plate may be interposed between the fastener and the base ply. The plate has a number of openings therethrough of relatively large area. The openings are filled with plugs of asphalt that adhere to the base ply. Pulling of the base ply is resisted by the plate acting against the shear areas between the asphalt plugs and the base ply.

Abstract: A zero stand-off tool and system for driving a powered fastener into a target work surface. A tool is provided having a reciprocable firing pin for detonating a power charge in a powered fastener supported within the tool. An exhaust gas chamber is provided in the tool for reducing noise. A powered fastener is provided having a receptacle end in which a nitrocellulose composition charge is mounted. The receptacle end has a cylindrical portion and a conical portion. The cooperation of the target work surface, the pointed end of the fastener, the fastener support portion of the tool, the firing pin and the shape of the receptacle end of the fastener serve to detonate the power charge and drive the fastener into the work surface.

Abstract: A nail with offset reinforced head, adapted to be formed into a strip of similar collated nails, comprises a nail shank, an integral nail head disposed in an offset relationship with the nail shank, at least one reinforcing ridge member provided integrally on a lower surface of the head and extending from the shank to an edge portion of the head. The ridge member and a lower surface of the head define a recess for receiving an overlapping head portion of a collated nail.

Abstract: A strip of collated fasteners is disclosed, which comprises a plurality of fasteners and a carrier molded from a polymeric material. Each fastener has an elongate shank, which has a pointed end, and a head. The shank of each fastener defines an axis and has two portions of different diameters, namely a thicker portion adjoining the head and a thinner portion adjoining the pointed end, and a shoulder joining the thicker and thinner portions. The carrier comprises a separate sleeve associated with each fastener and is frangible between the separate sleeves. A representative sleeve is disposed around the shank of the associated fastener and has an initial axial length, which the representative sleeve assumes when disposed around the shank of the associated fastener but not compressed axially, and a critical axial length, at which the representative sleeve splits when disposed around the shank of the associated fastener and compressed axially.

Abstract: A zero stand-off tool and system for driving a powered fastener into a target work surface. A tool is provided having a reciprocable firing pin for detonating a power charge in a powered fastener supported within the tool. An exhaust gas chamber is provided in the tool for reducing noise. A powered fastener is provided having a receptacle end in which a nitrocellulose composition charge is mounted. The receptacle end has a cylindrical portion and a conical portion. The cooperation of the target work surface, the pointed end of the fastener, the fastener support portion of the tool, the firing pin and the shape of the receptacle end of the fastener serve to detonate the power charge and drive the fastener into the work surface.

Abstract: A roofing and siding fastener for securing underlayments, exterior insulation sheathings, and similar membranes to a substrate. The disclosure comprises a cap portion having a rectangular body with oppositely extended legs. Said legs are bent downward and have heels situated at the ends. The cap has a nail centrally inserted through the body. The installer positions the fastener over the material to be secured and strikes the nail head, thereby driving the fastener into a substrate. As the cap portion engages the material, the heels act to deflect the flattening legs over the top surface of the material instead of allowing the legs to puncture. Each flattened leg now becomes a spring-like binder which not only provides superior holding power over the prior art, they also flex upward to dampen strong winds which can blow these underlayments off. This flexibility greatly enhances the effectiveness of underlayments in a "dry-in" procedure.

Abstract: A nail for use in a nailing strip, having a non-circular head defined by at least two dissimilar convex curved shapes, the nail having; a nail shank with a point at one end, shank; a first nail head portion at the other end of the shank, lying substantially in alignment with the shank axis, and extending outwardly therefrom on either side of the shank, a second nail head portion formed integrally with the first nail head portion, the second nail head portion being substantially offset relative to the shank, the first nail head portion defining a first generally convex curved shape, and having a central point coincident with an edge of the shank, so that the nails may lie in closely collated relation in a strip, and, the second nail head portion defining a generally convex curved shape extending away from the shank.

Abstract: The present invention is a thumb tack for holding photographs, posters and other similar items firmly in place on a supporting surface without poking any holes in the item being hung. The tack consists of a conventional sharp pin projecting outwardly from the underside of a bottom plate on the tack head. The tack head consists of the bottom plate connected to the top head by an edge razor thereof so that a slit is defined between the bottom plate and the top of the tack head. The top portion of the head has a peripheral arcuate clamping edge extending around the razor portion of the periphery of the top portion of the tack head. This razor portion of the periphery of the top portion of the tack head creates a clamp-like slit between the bottom plate and the top portion of the tack head. This slit is dimensioned for receiving edges of photographs, posters or other similar items which can then be inserted into the slit and held firmly in place without the necessity of poking a hole in the item being hung.

Abstract: A malleable, bioabsorbable polymeric staple includes a back span with two legs depending perpendicularly therefrom that are deformed toward each other initially and then upwardly toward the back span such that end points on each leg extends to the side and past the back span. The staple has a noncircular cross-sectional shape. A surgical staple-deforming anvil for deforming the staples has a staple-receiving face formed with a pair of elongated, non-collinear pocket-like depressions each having an entry end lying on a longitudinal axis parallel to the back span of the staple, and an exit end. The respective exit ends of the pocket depressions are located on opposite sides of the longitudinal axis. Accordingly, the legs of a staple driven toward the anvil and received in the pocket depressions are initially bent toward each other and then steered upwardly toward opposite sides of the back span.

Abstract: This invention deals with novel quilting pins that find use as fasteners for stabilizing insulation inside jacketing to form insulating covers that are installed around hot surfaces. Also disclosed is a method of using the pins to manufacture such insulating covers.

Abstract: Nails are driven into hard receiving materials such as concrete, rock, metal and the like by explosive powder charge operated setting tools. To achieve the high mechanical strength required for such nails, the nails are formed of two parts, one a shank and the other a head fitted onto the shank. While the head is formed of a deformable corrosion resistant steel, the shank is formed of an austenitic steel alloyed with nitrogen having a very high mechanical strength. The steel forming the shank can only be shaped to a very limited extent, whereby a narrow flange is provided on the rear end of the shank. A disk fitted on the shank serves as a guide for the nails during the driving operation.

Abstract: A nail fastener assembly for attaching thin metal sheets includes an axially extending nail with a conically shaped shank having ballistic-like tip at its leading end and a head at its trailing end. A disk is fitted on the leading end of the shank with a sleeve secured on the shank between the disk and the head. When the nail is driven by a setting tool, the sleeve acts on the disk in the region of the tip, so that the transmission of all forces acts on an annular radially outer surface on the leading surface of the disk. The leading end surface of the disk has a radially inner conically shaped first recess and an annular second recess encircling the outer edge of the first recess and spaced inwardly from the radially outer edge of the disk. Accordingly, the radially outer contact surface bears against the metal sheet being attached and provides high transverse stresses.

Abstract: A member (1) secured in place by a fastening element (5) attaches insulation panels (2) to a structural component (A). The fastening element (5) is driven into the structural component (A) by a setting tool (8). To prevent damage to sector-shaped parts (6) extending radially inwardly in the entrance to a passageway (4b) through the attachment member (1), a diametrically increased section (4d) of the passageway extends axially inwardly from the entrance. The diametrically increased section (4d) has a diameter increased by twice the thickness of the sector-shaped parts (6) compared to the adjacent inward diameter of the passageway, and an axial length at least equal to the free length of one of the sector-shaped parts (6). When the muzzle end (8a) of the setting tool (8) is inserted into the passageway (4b), the sector-shaped parts (6) are bent inwardly within the diametrically increased section (6d) of the passageway (4b) and, in combination with the passageway serve as a guide surface for the setting tool.

Abstract: A method and apparatus for molding a plastic cap on a preformed metallic shank includes inserting the shank on a strip material by a shank insertion device such that a head of the shank is elevated above the strip material. A molding device, having an open mold cavity is engaged with the strip material such that the strip material acts as a portion of the mold. The elevated head is positioned within the cavity. Plastic is injected into the mold cavity to surround and encapsulate the button head.

Abstract: Sheet metal fasteners and/or washers of the type which are used to fasten membranes to cementitious materials of a type such as utilized in roofing wherein the fasteners are treated to provide a corrosion resistant coating to the washers and those portions of the fasteners not inserted into the cementitious material.

Abstract: A wire nail with a head having a circumferential edge conforming to a complete circle and disposed in a radially offset relationship with respect to a shank. A flat surface on defined upon the shank provides a datum indicating where the shank is located. A flat surface on the shank provides a datum for orienting such nail and similar nails. In some embodiments, a tangent plane defined by means of a lower or underside portion of the head is oriented at an acute angle (75.degree. to 85.degree.) relative to the shank. In a strip of such (collated) nails, the flat surfaces defined upon the shanks define an open channel, which coacts with a rib integrally provided upon one wall of a nail-feeding mechanism. In a nail-making machine, two gripping members defining an annular recess and a punch are used to form such a nail from a wire of a malleable metal.

Abstract: A fastener for use particularly to temporarily secure wood strip members to a concrete substrate includes an upper cylindrical head overlying a first cylindrical shank, with a truncated conical further head coaxially aligned with the cylindrical head, with a second shank positioned between the further head and an elliptical, deformable anchor portion including a third shank underlying the anchor portion. The anchor portion is deformable to enhance securement of the fastener within the concrete substrate, and wherein further the cylindrical head and the further head define a gap therebetween to enable removal of the fastener by application of a tool to the first shank.

Abstract: A multi-pronged thumbtack which includes a head and a plurality of tines projecting from the head in the same direction to assure that paper impaled upon the tines will not be able to rotate around the axis of any one of the tines. In general, the head has at least one monoplanar side from which the tines extend codirectionally, and three tines are preferably disposed at the corners of an equilateral triangle.

Abstract: An anchor member assembly is made up of an anchor bolt and an expansion wedge. The assembly can be anchored in a borehole in a receiving material by inserting the assembly and then displacing the expansion wedge relative to a wedge surface on the anchor bolt. At its trailing end, the anchor bolt has an axially extending outwardly flaring head section forming at least a part of a conical surface. The head section can be driven by hammer blows into a wooden member. Initially, the anchor bolt and expansion wedge are in detachable engagement until the head section is driven into the wooden member. Subsequently, as the expansion wedge is axially displaced relative to the anchor bolt, the engagement between them is released and the anchor member assembly is secured in the receiving material.