Abstract: A ceramic fastener assembly for high temperatures. One embodiment is a fastener assembly that includes a ceramic fastener configured to engage a hole of a structure. The ceramic fastener includes a head and a non-threaded shank including one or more indentations around its perimeter. The fastener assembly also includes a sleeve configured to slide over the non-threaded shank of the ceramic fastener. The sleeve includes a hollow cylindrical body, an exterior surface with threads, and an interior surface with one or more protrusions configured to mate with the one or more indentations of the non-threaded shank. The fastener assembly further includes a nut configured to engage the threads of the sleeve to tighten the one or more protrusions with the one or more indentations of the non-threaded shank. The fastener assembly also includes a thermal spacer configured to thermally isolate the nut and the sleeve from the structure.

Abstract: A fastener for retaining a bolt in a hole in a structure, comprising a bushing integrally formed with and extending from the bottom surface of a retainer, the bushing being dimensioned for insertion into the hole in the structure and having a wall thickness ranging from about 0.005 inches to about 0.030 inches, wherein the bushing is configured to be expanded within the hole, thereby securely coupling the expanded bushing within the hole of the structure and anchoring the retainer to the surface of the structure surrounding the hole. A tool for installing a fastener, comprising a tapered mandrel configured for insertion within a fastener situated within a hole of the structure, a drive mechanism configured to retract the mandrel through the fastener and thereby expand the fastener, and a force sensor configured for measuring a force applied by the drive mechanism to retract the mandrel through the fastener.

Abstract: 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 (?) 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 (?) between 80 and 120 degrees, more preferably between 90 and 110 degrees, most preferably of 80, 90 or 100 degrees.

Abstract: A fastener having a damping function with which at least a first and a second component can be connected via a screw connection. The fastener consists of the following components: an elastically deformable outer sleeve, a support sleeve arranged therein and a screw sleeve with telescopic portion arranged in the outer sleeve. When establishing the connection between the components, the outer sleeve folds, whereby the support sleeve and the screw sleeve are moved into each other.

Abstract: A nail for a nail setting tool comprises a predominantly lignocellulosic material. The nail has a nail shank, at the front end of which is provided a nail tip in the form of a conical round tip. At the rear end region is a head region. The tip angle of the nail tip is >40°.

Abstract: A fastener sealing material for application to fasteners is formulated from an acrylate present in a concentration of about 90 to about 97 percent by weight of the sealing material and a nanostructured material present in a concentration of about 3 to about 10 percent by weight of the sealing material. The sealant is applied to the fastener as a liquid and is cured using an ultraviolet or LED light source and without the use of heat.

Abstract: A multi-piece locking fastener assembly including a thickened base layer having a first wider diameter passageway exhibiting a first interiorly threaded orientation and a second narrower diameter passageway exhibiting a second opposite threaded orientation and extending a distance in communication with and beyond a bottom end wall of the first wider passageway. A first bolt fastener has a first arrangement of exterior threads engageable with the wider diameter passageway of the base layer. The first fastener further includes an interior passageway. Following installation of the wider fastener into the base layer, a second narrower diameter bolt fastener having at least a partially threaded stem is threadably inter-engaged with the second passageway in the base layer to prevent loosening of either fastener via their counter-threaded orientations.

Abstract: A fastener and an assembly for making space and adding support between external and internal building components, both serving as and creating a thermal barricade between building components, where the fastener saves time and significant cost in the construction process.

Abstract: A tolerance ring including a sidewall having a first and a second opposite major surfaces spaced apart by a thickness, wherein the first major surface defines an inner diameter of the tolerance ring at a first location of the sidewall and an outer diameter of the tolerance ring at a second location of the sidewall. A method of forming a tolerance ring including providing a strip of material comprising a first, a second, a third, and a fourth edge, shaping the first edge of the strip toward the third edge, and shaping the second edge of the strip toward the fourth edge.

Abstract: A grommet (200, 300, 400), a stud (102), an assembly of a grommet and a stud forming a fastener (100), and a method of assembling a grommet and a stud to form a fastener has the grommet with an interengaging element (250) in a channel wall of the grommet for engaging a cooperating, compatible or complementary interengaging element in a wall of the stud. The grommet and the stud can be assembled by moving the grommet and the stud relative to each other until the interengaging element in the grommet engages the complementary interengaging element in the stud. A family of grommets is described.

Abstract: The present invention concerns a removable sleeve (1) intended for being positioned on a fixing screw and produced from an elastically deformable material, characterised in that it has: a first cylindrical portion (5) with a constant internal diameter substantially equal to the external diameter of the shaft of said screw, this portion being extended by a second flared cylindrical portion (7) provided on the external peripheral surface of same with at least first and second axially separated rings of lugs (8, 9), an axial insertion slot (10) extending over the entire height of said sleeve (1) and wide enough to allow it to be mounted on the shaft of said screw and to be held there, at least one partial axial slot (11?) extending over a portion of the height of said sleeve (1) from the flared end of same.

Abstract: A fastener assembly for use with one or more workpieces. The fastener assembly can be a single-sided (i.e., blind) fastener assembly in which the fastener assembly is inaccessible from one side of the workpiece(s). In this regard, the workpiece(s) can make-up an enclosed component, for example. The fastener assembly can have a fastening end, such as a threaded stud, for securement with a distinct component that is otherwise detached from the fastener assembly. The workpiece(s) can be composed of a carbon fiber composite material, an aluminum material, or another type of material.

Abstract: The object of the invention is a cap to lubricate an inner wall of a perforation going through at least two elements of the structure. The cap comprises a tubular body and at least one lubricant reserve, and before installation in the structure said cap has a largest external diameter larger than an internal diameter (DS) of the perforation, and the cap lubricates the internal surface of the perforation when its largest external diameter is radially compressed by a wall of the perforation. The invention also concerns a fastener comprising this type of cap, and an interference assembly process for the fastener equipped with the cap. The invention is applicable to the assembly of aircraft structures.

Abstract: A bolt configured for preventing loss of the bolt during removal can include a bolt head, a bolt shaft extending from the bolt head in an axial direction, the bolt shaft including threads, and a bolt capture channel defined through the bolt head and the bolt shaft in the axial direction. The bolt capture channel can include a head opening and shaft opening.

Abstract: A screw assembly includes a screw and a washer mounted on the screw. The screw includes a screw head, a rotation portion formed on a top of the screw head, and an external thread formed on a bottom of the screw head. The bottom of the screw head is provided with at least one projection and at least one recessed portion. When the external thread is screwed into an article, the washer is compressed between the screw head and the article. The at least one projection and the at least one recessed portion press the washer, and the washer is expanded outward and forms an expansion. The at least one projection and the at least one recessed portion enhance an airtight effect of the washer.

Abstract: A threaded pin comprises a threaded cylindrical stem that extends between a proximal stem end and a distal stem end, and a coupling end portion that extends from the distal stem end. In the coupling end portion, at least one annular groove is formed, which is distally delimited by a distal annular ridge that defines a maximum outer diameter of the coupling end portion. The maximum outer diameter of the coupling end portion is smaller than the inner diameter of the threaded cylindrical stem in such a way that the coupling end portion may be inserted with play into a threaded hole wherein the threaded pin may be screwed, the distal annular ridge being suitable for insertion between the ridges of the female thread of the threaded hole.

Abstract: A three-piece locking fastener including an interiorly threaded intermediate component open at opposite ends. A first screw having a first exterior thread pattern rotationally inter-engages with the interior threads of the intermediate component when installed through a first selected one of the opposite ends, the first screw having a hollow shaft exhibiting a further plurality of interior threads matching a direction of the first thread pattern. A second screw has a second exterior thread pattern opposite the first pattern and, upon being installed within the other selected one of the opposite ends, rotationally inter-engages the interior threads of the first screw, so that loosening of either of the first and second screws being prevented by their counter-threaded orientation.

Abstract: A grooved washer is used on a screw carrier tape and has a ring body. The ring body has an outer side face, a groove, two groove walls, and a perforation. The groove is annularly formed in the outer side face. The two groove walls are oppositely defined in the groove. The perforation is formed through a center of the ring body and through the top surface of the ring body and the bottom surface of the ring body. Moreover, the grooved washer has a metal gasket which is attached to the top surface of the ring body. With the groove, the grooved washer limits the carrier tape to be stuck on the screw carrier tape so that screws are stably located in the positioning apertures without falling from the screw carrier tape and being scattered, so as to improve the convenience in use.

Abstract: The invention provides a radially expanding fastener/alignment plug assembly for use with a torque power tool, the assembly including: a sleeve member (10), insertable into a hole of an object, having radial expansion elements with inner surface portions which are tapered towards a first end; an expanding member (20), insertable in the sleeve member, having an outer surface portion which is tapered towards a first end, cooperating with the inner tapered surface portions of the radial expansion elements of the sleeve member; and a displacement member (30) formed between a second end of the sleeve member and a second end of the expanding member. Advantageously, the assembly is self-reacting allowing an actuation torque to be applied to and reacted upon to create high levels of pulling and expansion force without the need for an external reaction point.

Abstract: A rivet may include a pin comprising: a threaded portion (36), a shank (38) and a head (40); and a bushing (32) comprising an essentially cylindrical body, said body comprising a deformation zone designed to form an external bulge (80); a collar (70) designed to receive the head of the pin; and a tapped portion (66) designed to engage with the threaded portion of the pin. The shank (38) of the pin comprises a first cylindrical portion (44) and a second cylindrical portion (46) connected by a shoulder (48), the first portion being adjacent to the head and having a first diameter, the second portion being adjacent to the threaded portion and having a second, smaller diameter.