In one embodiment, a fastener includes a flexible head and a shank coupled to the flexible head. The flexible head includes a center head portion and a plurality of wing portions coupled to the center head portion. Each of the plurality of wing portions includes a contact area configured to contact a first surface of a part to be fastened. The shank includes a clip groove configured to hold a retainer clip against a second surface of the part to be fastened. The second first surface of the part to be fastened is opposite the first surface of the part to be fastened.

In general, embodiments of the present invention relate to fastening device assemblies. Specifically, the present invention provides a fastening device configured to couple a first object with a second object. A first coupling member shaped substantially like a bolt with a bolt head and a shaft. The shaft is inserted into a through hole in the first object and second object. A second coupling member having a head portion and a cylindrical body portion is coupled with the first coupling member. The first coupling member passes through a cylindrical hollow rotating member. An expanding member having a cylindrical hollow shape and arranged between the second coupling member and the rotating member is configured to expand to couple the first object and the second object between the head portion of the second coupling member and the expanding member.

In general, embodiments of the present invention relate to fastening device assemblies. Specifically, the present invention provides a fastening device configured to couple a first object with a second object. A first coupling member shaped substantially like a bolt with a bolt head and a shaft. The shaft is inserted into a through hole in the first object and second object. A second coupling member having a head portion and a cylindrical body portion is coupled with the first coupling member. The first coupling member passes through a cylindrical hollow rotating member. An expanding member having a cylindrical hollow shape and arranged between the second coupling member and the rotating member is configured to expand to couple the first object and the second object between the head portion of the second coupling member and the expanding member.

A liquid ejecting head is mounted on a carriage in which a first positioning hole defined by a first inner surface is provided. The liquid ejecting head includes a first positioning member and a first intermediate member. The first intermediate member includes a first expansion portion being capable of being inserted into a first positioning hole and abutting on the first inner surface by expanding in a radial direction intersecting with an insertion direction of the first expansion portion. The first expansion portion includes a first insertion hole into which the first positioning member is inserted and expands in the radial direction by the first positioning member being inserted into the first insertion hole.

An anchor for wallboard installation includes an elongated anchor body including a driving end and a wall boring end. The anchor body has a main body portion running from the driving end toward the wall boring end. The wall boring end includes a plurality of axially cutting extending teeth. The anchor body includes an internal bore and diametrically opposed slots to facilitate split of an end portion of the anchor body when the anchor is installed in a wall and a fastener is inserted for mounting an object.

An anchor for wallboard installation includes an elongated anchor body including a driving end and a wall boring end. The anchor body has a main body portion running from the driving end toward the wall boring end. The wall boring end includes a plurality of axially cutting extending teeth. The anchor body includes an internal bore and diametrically opposed slots to facilitate split of an end portion of the anchor body when the anchor is installed in a wall and a fastener is inserted for mounting an object.

In embodiments, a mounting bracket may facilitate an attachment of a first device to an enclosure of a second device. A shoulder screw may be inserted through a grommet which is mounted in a bracket, and the shoulder screw may be threaded into an opening within the first device. The grommet may have an axial through-hole with a counter bore. A portion of the shoulder screw may be threaded to mate with a threaded opening of the first device and may be designed to compress the grommet for secure mounting. A raised cylindrical section on the shoulder of the screw may be captured within the counter bore of the grommet when pressed into position and another raised section of the shoulder may prevent the screw from being pulled out of the counter bore when the screw is unthreaded from the corresponding opening of the first device.

In embodiments, a mounting bracket may facilitate an attachment of a first device to an enclosure of a second device. A shoulder screw may be inserted through a grommet which is mounted in a bracket, and the shoulder screw may be threaded into an opening within the first device. The grommet may have an axial through-hole with a counter bore. A portion of the shoulder screw may be threaded to mate with a threaded opening of the first device and may be designed to compress the grommet for secure mounting. A raised cylindrical section on the shoulder of the screw may be captured within the counter bore of the grommet when pressed into position and another raised section of the shoulder may prevent the screw from being pulled out of the counter bore when the screw is unthreaded from the corresponding opening of the first device.

A division type mechanical seal includes a through hole portion formed over two divided sealing rings so as to go over divided contact faces of the two divided sealing rings adjacent to each other in the circumferential direction, and a coupling tool inserted into the through hole portion to couple the two adjacent divided sealing rings. The coupling tool includes a bolt, a nut, and a tube fitted to a shaft portion of the bolt, and the tube is compressed in the axial direction and expanded in the outer diameter direction when the two adjacent divided sealing rings are coupled by fastening the nut.

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.