Abstract: A device for handling a load provided with a thread includes a screw assembly equipped with a gripper and capable of connecting to the load, a first screwing indicator secured to the screw assembly, a second screwing indicator movable in translation relative to the first screwing indicator, and a spring. In particular, the spring is inserted between the first screwing indicator and the second screwing indicator and has an effect of returning the second screwing indicator such that the second screwing indicator abuts against the load, so that a coincidence between the first and second screwing indicator indicates a sufficient screwing of the device onto the load.

Abstract: A fastener includes a nut having an anterior portion, a posterior portion and a threaded bore with a center axis extending from the anterior portion to the posterior portion, the outer surface of the posterior portion having an annular camming surface concentric with the center axis, the camming surface having a radius that decreases along the direction of the center axis away from the anterior portion toward the posterior portion; and a sleeve having a first end having an internal annular camming surface that engages the nut camming surface concentrically with the center axis and a second end having a thrusting surface. Tightening the fastener on an externally threaded member applies a force to the thrusting surface parallel to the center axis resulting in the nut camming surface and the sleeve camming surface cooperating to compress a portion of the threaded bore toward the threaded member.

Abstract: A fastener includes a shank having a pilot section and a threaded section. The pilot section includes a cutting tip and a drill section; the threaded section includes a first thread region having the same twist as the drill section and a reverse thread region. A helical ridge may be provided in the reverse thread region. A head at the second end includes a top portion such as a disk and an undercut region.

Abstract: A nut assembly comprises a capture nut having a smooth bore adapted to fit around the threads of a threaded member such as a bolt or a threaded rod. The capture nut includes a tapered bowl which defines a hexagon in cross section, for example. The nut assembly further includes a split nut having a surface which snugly mates with the tapered bowl of the capture nut. The split nut engages the threads of the threaded member, but only after the split nut is brought into close proximity to the capture nut, thereby avoiding the need to thread the nut assembly the entire length of the threads of the threaded member. The split nut may be formed to two separable pieces, or it may be formed of two integral halves joined together by a thin membrane.

Abstract: A self-drilling expansion fastener is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure and a drill structure. The expansion structure has a plurality of internal threads and force-distributing bars. The drill structure has a chip guard for covering a head of the expansion structure, and a drill forward projected from the chip guar for self-drilling a hole. When an externally threaded element is screwed into the expansion structure to mesh with the internal threads, the force-distributing bars are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener is also disclosed.

Abstract: A low-profile rivet-like fastener (10) is adapted to be mounted in a hole (19) provided through a wall (15). The improved fastener broadly includes: an elongated tubular body (11), a nut (12), a ring (13), and a retainer (14). The body has a front end and a rear end. A flange (22) extends outwardly from the body adjacent the front end. The body has an inwardly-extending lug (27) adjacent the body rear end. The nut (12) has a head portion (30) and a collar portion (31) extending forwardly from the head portion. The collar portion (31) has an intermediate portion passing through the lug and terminates in a marginal end portioned forwardly of the lug. The ring (13) loosely surrounds the collar marginal end portion. The retainer (14) prevents the ring from separating from the collar marginal end portion.

Abstract: A nut for fastening a first workpiece defining a through recess to a second workpiece including a bolt projecting in an axial direction through the recess, and the nut comprises an axially extending shank and flange at a first end of the shank, and the nut defines a bore extending axially through the flange and into the shank and further defines an opening to the bore proximate to the first end of the shank, and the nut further includes an elastic holding section radially outward of the opening, and the nut partially defines a depression radially outward of the holding section, so that the holding section can flex radially outward into the depression when the nut is jammed onto the bolt.

Abstract: Overcoming all typical limitations of fasteners, disclosed is a fully-reusable, non-deforming, precise position, drywall fastener for heavy-weight items that works by anchoring to outside of a drywall panel using a drywall hole reinforced hollow cutter bar and a precise-fit pin wall body with outside rims, while fastener anchors beneath drywall panel by a manual pivoting of fastener locking arms hinged to pin wall body. Advancement of a threaded locking bolt through a center hole of pin wall body reversibly wedges apart shoulders of locking arms to cause their lateral pivoting and then locking without over-tightening fastener parts or damaging drywall.

Abstract: A non-friction, interlocking fastener with a bolt that is locked into a retainer incorporating an integral spring with limited compression and which is axially constrained to prevent non-linear movement.

Abstract: A coupling spacer includes a spacer body defining a first edge and a second edge opposite the first edge. The spacer body has a tapered shape. Further, the coupling spacer includes a spacer flange extending outwardly from the spacer body. The spacer flange is closer to the first edge than the second edge. The coupling spacer additionally includes at least one snap feature extending outwardly from the spacer body. The snap feature is closer to the second edge than the first edge.

Abstract: A low energy wood screw that may be inserted quickly and using less energy than conventional screws. In various embodiments, the screw may include a countersunk head having a recess for accommodating a driving tool, a tapered neck, a plurality of crown ribs extending over the head and neck, a lubricating coating, main threads with a large thread lead, and lower threads having an asymmetrical profile and extending onto a gimlet point.

Abstract: The invention relates to an attachment member (R) of the “lockbolt” type comprising a pin (100) and a ring (200), said pin (100) comprising a head (110) at one end and having, on its body, a first part (120) grooved with a plurality of locking grooves or channels (121p, 121c, 121d) enabling the ring (200) engaging with the pin (100) to attach itself thereto by deformation, and a second part (130) that is grooved in order to cooperate with a tool (O), characterized in that said grooved part (120) of the pin (100) is preformed so as to provide a series of non-helical grooves (121p, 121c, 121d), the beginning and the end of the series consisting of grooves (121p, 121d) that have different profiles from the identical grooves (121c) located in the central part of said series, the different profile having an identical depth but a greater width compared to the profile of the grooves (121c) located in the central portion of the series. The invention is applicable to the production of attachments and rivets.

Abstract: A NUT WITH A C-SHAPED PROFILE, of the type formed by a punched metal sheet folded onto itself for fixing onto a panel, wherein one of the arms has a hole for the arrangement of a screwed device with at least one thread and wherein the other arm, which is aligned with the axis of the preceding hole, has another hole for receiving the nut tightening screw, the upper base being provided with incisions which define horizontal connecting portions separated from the body of the upper base and longitudinal connecting portions which form an extension of the former and which join together the upper base and lower base.

Abstract: The present disclosure provides a multiple use threaded fastener having a plurality of redundant locking features. The fastener includes a threaded hollow lock bolt having a tapered internal wall constructed to threadingly engage a threaded aperture in a housing. A threaded lock stud having a tapered external wall is constructed to fit at least partially within the hollow lock bolt and threadingly engage the threaded aperture of the housing and engage the tapered wall of the hollow lock bolt.

Abstract: The specification discloses a fastener assembly including two elements. One element is an elongated body including that a gear rack and a radial stop. The other element is a nut fitted over the elongated body and including a pawl engaging the gear rack. The current embodiment includes two pairs of gear racks and two pairs of pawls. The two pairs of pawls are axially offset from one another. The elongated body and the nut are keyed to prevent relative rotation therebetween. The elongated body defines a conduit through the fastener assembly.

Abstract: A component for use with a rotary tool is designed to be inserted through a surface of a workpiece made of a first material showing friction-induced plasticity for attachment to the workpiece. The component has a head portion having a base and a working end being threaded at its outer surface, and further has an insert portion having a penetrating end and extending along an insertion axis. At least an outer surface of the insert portion is made of a second material harder than the first material. The insert portion is provided with a threaded bore closed at its penetrating end and extending along the insertion axis to initially receive the threaded working end.

Abstract: The invention relates to a rivet element, in particular for attachment to components of fiber composite materials, having a rivet section which is formed at least regionally as a spike which tapers in the direction towards a tip and which can be dilated by means of a die button.

Abstract: The invention relates in first instance to a nut having a first part (11) which has a first through opening (O1), and having a second part (12) which has a opening (O2) having an opening contour, the parts (11, 12) being connected so as to be rotatable about a rotational axis (A) which passes through the openings (O1, O2), and the openings (O1, O2) being aligned with one another, in addition, the first opening (O1) on its inner face having a profile which extends in the peripheral direction and which is interrupted in the peripheral direction. In order to provide a nut which is quickly mountable on a threaded bolt, and which has a simple design that allows greater security against the nut coming off the threaded bolt, it is proposed that the opening contour of the second opening is non-circular. The invention further relates to a combination of a bolt (4) having a cross-sectional area with a nut (10).

Abstract: A screw comprises an enlarged head; a large diameter screw rod having one end extending from the enlarged head; a small diameter screw rod having one end extending from another end of the large diameter screw rod; another end of the small diameter screw rod being formed as a tip end; a first thread extending from the large diameter screw rod and the small diameter screw rod; and the first thread extending to the tip end of the small diameter screw rod. A diameter of the first thread on the large diameter screw rod is large than that of the first thread on the small diameter screw rod. A pitch of the first thread on the large diameter screw rod is smaller than or equal to that of the first thread on the small diameter screw rod.

Abstract: A rivet sealing washer that includes a washer body with an outer surface and an inner surface and a rivet aperture. Additionally, the rivet washer includes a membrane with at least one raised high pressure point skirt or rib and at least one recessed trough that provides a continuous seal over the outer surface of the washer body, the rivet body, and the mandrel head, and is sealably and continuously connected to the perimeter of the washer body and optionally a circumferential portion of the outer surface.