The present disclosure relates to a screw connection comprising a support component, an additional component and a screw to affix the support component to the additional component. The support component comprises a tube made of plastic to accommodate the screw in a friction and positive fit, wherein the tube comprises a thermoplastic foam. The screw comprises a blunt-edged screw thread. The foam is compacted as the screw is driven into the tube. The present disclosure further relates to a corresponding screw and to a method of connecting a support component to an additional component using the screw.

A flooring screw comprises a screw head, a screw shank connected with the screw head, and a cone connected with screw shank. The screw shank includes a first shank section connected with the screw head, a second shank section connected with the cone, a first thread formed on the first shank section, a second thread extended from the cone to the second shank section and running helically along a direction opposite the direction of the first thread, and a third shank section between the first shank section and the second shank section. The third shank section includes a plurality of peaks protruding outward radially and a plurality of troughs formed between the peaks and recessed radially with respect to the peaks. The peaks and the troughs form an unsmooth surface on the third shank section.

Disclosed are systems, devices and methods used in construction to secure one component, such as a header, to another component, such as a joist, while controlling spacing. Fasteners are used with a removable sleeve member having longitudinal ribs to secure the fastening assembly and prevent movement. An installation guide is provided that facilitates both flush and offset installation.

The invention relates to a screw (10) including a head (12), a shaft (14), and a thread (16), with the thread (16) having at least two different thread sections (18, 20), with an external diameter D.sub.Gn of a thread section (18) near the head being smaller than an external diameter D.sub.Gf of a thread section (20) distant from the head and greater than an external diameter D.sub.Sf of the shaft (14) in the area of the thread section (20) distant from the head. According to the invention it is provided that the thread (16) extends up to the bottom of the head (12). The invention further relates to a fastening arrangement (24), the use thereof, and a method.

An integral nail/disk structure that eliminates the need of having any exposed nails associated with a shingled roof having a color matching body member integrally formed with a roofing nail. Another embodiment including a fastener such as a nail or screw having an enlarged head and an associated gasket member for fastening sheet metal to a roof structure. The gasket member has a sealant on both of its top and bottom surfaces so as to adhere both to the underside of the enlarged head portion of the nail or screw, and to the sheet metal to create a waterproof seal. Still another embodiment includes an enlarged cap member associated with a gasket member attached to its underside portion wherein the cap/gasket member can be attached over a fastener hole in a roof, or over a faulty roofing nail or screw in lieu of caulking techniques usually used to cure leaks where the faulty fastener attaches sheet metal to a roofing structure.

A method and fastening device for attaching polyester fiber panels to a substrate, such as a wall or a ceiling. The fastening device comprises an anchor part for attachment to the substrate and a fastening part for attachment to the panel. The fastening part comprises a cylindrical portion, a helical member surrounding the cylindrical portion for penetrating the panel upon rotation of the helical member and a recess in the cylindrical portion for receiving the anchor part. The thread angle of the leading edge of the helical member is greater than the thread angle of the trailing edge.

A flange to he assembled to an end portion of a duct member includes a plurality of pre-fabricated fastener entry areas disposed in an inner wall member, and a plurality of first fastener indicators disposed on an outer wall member, wherein the pre-fabricated fastener entry areas are substantially aligned with the first fastener indicators, each of the plurality of first fastener indicators being sized to guide and each corresponding fastener entry areas being sized to receive a self-tapping screw fastener there through to fasten the wall members to the end portion of the duct member. The fastener entry areas and correspondingly aligned fastener indicators, respectively, may be spaced apart such that the fasteners can be inserted at regular intervals along the length of the flange and the length of the end of the duct member.

A method of providing an electrical grounding point on an aluminum structural member of a motor vehicle. The member is hydro-formed to produce a closed cross-section, after which a hole surrounded by a flange is formed in a wall of the member. The flange is generally the shape of a truncated cone and extends toward an interior of the member. A self-tapping fastener having a grounding lead attached thereto is driven into the hole to cut threads into the flange and secure the grounding lead to the member. The self-tapping fastener allows the grounding connection to be achieved without any access to the hollow interior of the member as would otherwise be required.

A nail screw, in particular for connecting facade boards or terrace planks made of wood, especially real wood, has a shaft, a conical tip formed at the front end region of the shaft and a head formed at the rear end region of the shaft. A thread has a forward facing insertion flank and a rearward facing grip flank between the conical tip and the head. The thread is a double thread, wherein a grip flank angle (α) measured between the grip flank and a plane perpendicular to the longitudinal axis of the nail screw is between 25 and 35 degrees, more preferably between 28 and 32 degrees, most preferably 30 degrees. The conical tip has a tip angle (ε) between 80 and 120 degrees, more preferably between 90 and 110 degrees, most preferably of 80, 90 or 100 degrees.

A wall anchor for use in a cavity wall includes an elongate body having a driven end portion and a driving end portion. The driven end portion is adapted to be threadedly mounted on the inner wythe of the cavity wall. The elongate body includes a barrel portion adjacent the driven end portion. A first end of the barrel portion is adapted to abut the inner wythe of the cavity wall when installed. A thermal coating is disposed on the first end of the barrel portion. The thermal coating is configured and arranged to reduce thermal transfer in the cavity wall between the elongate body and the inner wythe when installed.