A connection system including a connection hole inserted in form of a circular hole on the part to be connected, a cylindrical hole bushing engages into the connection hole and has a screw hole thereon vertical to the surface of the part to which it is placed, a bolt is placed on the hole bushing such that the head part remains on the lower surface of the part or inside the part, a nut attached at the bolt end extending outwards the part, a washer formed of a circular base is placed between the head part and the hole bushing, a rib extends vertically over the base and is folded by compressing between the head part and the hole bushing, and prevents the head part from passing through the connection hole, and enabling two or more parts to be connected.

A tool for installing a blind fastener including a core bolt and a core nut is provided. The tool includes a driving member, a collet driven by the driving member for engaging the core bolt, and an external sleeve for holding the core nut and preventing the core nut from rotating during installation of the blind fastener. The external sleeve is movable between a first position in which the external sleeve is driven by the collet to rotate with the collet and a second position in which the external sleeve is stationary despite rotating action of the collet.

A fastener system is provided that includes a spindle bolt having a threaded section and a tooling interface at a head, a bolt body at least partially mated with the spindle bolt, including an anti-rotation slot and an outer surface, a nut including an interior threaded portion and an anti-rotation extension, and an expandable ring mated with the nut and including a lower clamping surface. In a clamping configuration of the fastener system, the lower clamping surface extends beyond the outer surface of the bolt body, the interior threaded portion of the nut is threadingly engaged with the threaded section of the spindle bolt, and the anti-rotation extension mates with the anti-rotation slot. In an installation configuration of the fastener system, a diameter of the lower clamping surface is less than a diameter of the lower clamping surface in the clamping configuration.

The present disclosure provides a blind tack fastener. The blind tack fastener includes an elongated body having a first end and a second end opposite the first end. The blind tack fastener also includes a collar surrounding a portion of the elongated body. The blind tack fastener also includes a sleeve surrounding the elongated body and positioned between the second end of the elongated body and the collar. A region of the sleeve is band annealed.

Disclosed is a fastener that includes a nut with a threaded bore that includes a head on one end having three recesses, a cylindrical outer surface and a tapered ramp on the other end, a bolt that includes a head, a threaded portion engaged with the threaded bore, a recess next to the bolt head and an enlarged shank between the threads and the recess, where the outer diameter of the recess is smaller than a major diameter of the threaded bore of the nut and where an outer diameter of the shank is larger than a major diameter of the bolt threads, and a sleeve with a unthreaded bore positioned between the tapered ramp and the bolt head with one end crimped into the recess such that the internal diameter of the crimped sleeve bore is smaller than the major diameter of the threads on the bolt.

A connection system including a connection hole inserted in form of a circular hole on the part to be connected, a cylindrical hole bushing engages into the connection hole and has a screw hole thereon vertical to the surface of the part to which it is placed, a bolt is placed on the hole bushing such that the head part remains on the lower surface of the part or inside the part, a nut attached at the bolt end extending outwards the part, a washer formed of a circular base is placed between the head part and the hole bushing, a rib extends vertically over the base and is folded by compressing between the head part and the hole bushing, and prevents the head part from passing through the connection hole, and enabling two or more parts to be connected.

A threaded blind fastener and spacer assembly is provided, the assembly including a blind fastener having a flange; and a spacer having a surface, said spacer having a hole therethrough, said hole terminating as a counterbore at said surface, said counterbore receiving said flange. Methods of preparing the assembly and a method of securing the threaded blind fastener and spacer assembly to a substrate material are also provided.

A tacking device for a temporary fastening of components has a sleeve having a first end, a second end, an axial hole and a radially projecting collar at the first end, and an elongate mandrel having a head end and a tensioning end. The mandrel can be inserted into the axial hole at the second end of the sleeve, can be brought into stop contact with a sleeve rim surface by the head end and projects beyond the first end from the sleeve in the inserted state. A holding unit is designed to hold the mandrel when the tacking device is inserted into an opening of a component. The sleeve has a deformable material, which is squashed against the component when is inserted into an opening of a component. The mandrel has a predetermined breaking point with a weakened cross section, positioned between the head end and the tensioning end.

Disclosed is a fastener that includes a nut with a threaded bore that includes a head on one end having three recesses, a cylindrical outer surface and a tapered ramp on the other end, a bolt that includes a head, a threaded portion engaged with the threaded bore, a recess next to the bolt head and an enlarged shank between the threads and the recess, where the outer diameter of the recess is smaller than a major diameter of the threaded bore of the nut and where an outer diameter of the shank is larger than a major diameter of the bolt threads, and a sleeve with a unthreaded bore positioned between the tapered ramp and the bolt head with one end crimped into the recess such that the internal diameter of the crimped sleeve bore is smaller than the major diameter of the threads on the bolt.

Disclosed is a blind fastener including a core bolt, a body and a blind side clamp on the core bolt insertable through an aperture, where moving the core bolt relative to the body forms an enlarged bearing surface against a back surface. The fastener includes an extension from the body with a wrenching surface and an undercut between the body and the wrenching surface that is optionally configured to break when torque equal to the sum of an application specified minimum installed seated torque and a manufacturing failure torque tolerance for the undercut is applied. Also disclosed is a method of dressing the installed fastener including machining through the top surface of the fastener along a longitudinal axis of the core bolt of the fastener and the extension that extends from a body of the fastener until intersecting the undercut between the extension to remove the extension.