Mounting support assemblies for fire and overheat detection systems are described. The mounting support assemblies include a support tube connector having a first portion and a second portion, wherein a captive space is defined between the first portion and the second portion, a fastener arranged at least partially within the captive space and passing through the first portion of the support tube connector, and a biasing element arranged about the fastener and positioned between an end of the fastener and the first portion of the support tube connector, the biasing element biasing the fastener in a direction toward the second portion.

A fastener assembly may comprise a housing defining a first cavity and a second cavity. A first threaded member and a second threaded member may be located within the housing. A first biasing member may be coupled to the first threaded member. A second biasing member may be coupled to the second threaded member.

A captive fastener is disclosed having a longitudinal slot along the shank for receiving a hold-out clip, and a chamber that houses a retractable push out pin. The push out pin is spring actuated to extend out of the shank and can be retracted into the cavity against the bias of the spring to pass through a primary panel and subpanel. The push out pin is shaped to bear against a counterbore and secure the fastener within a panel while other components are affixed to the fastener.

A biasing system for use with a fastener is disclosed. The biasing system can include a sleeve configured to be disposed about a shank of a fastener and operable to form at least a portion of a first load path between the fastener and a component coupled to the fastener to preload the fastener through the sleeve. The biasing system can also include a spring configured to be associated with the sleeve and operable to form at least a portion of a second load path parallel to the first load path between the fastener and the component to facilitate biasing the fastener away from the component.

A hung structure is provided. The hung structure is adapted to be hung on a fastener. The hung structure includes a hung member and a restriction member. The hung member includes an opening, wherein the opening includes an insertion area and a first slot area, the fastener is adapted to pass through the opening via the insertion area, the fastener is adapted to slide from the insertion area to the first slot area, and when the fastener is in the first slot area, the hung member is supported by the fastener. The restriction member includes an affixed section, an elastic unit and a restriction section. The affixed section is affixed to the hung member. The elastic unit is connected to the affixed section. The restriction section is connected to the elastic unit, wherein the restriction section corresponds to the insertion area.

An acousto-optic device may include an acousto-optic component carried by a chassis, and a fastener assembly for removably securing a cover to the chassis. The fastener assembly may include a base sleeve having an enlarged head, and a tubular body and extending through a cover passageway. The fastener assembly may include a retainer sleeve having a threaded interior secured to the threaded exterior of the base sleeve to define an anchor member, the anchor member having a threaded interior. The fastener assembly may further include a fastener, a shaft having a threaded exterior opposite the enlarged head and to be threaded through the threaded interior of the anchor member to capture the fastener to the cover and movable through the chassis passageway for removably securing the cover to the chassis.

An apparatus for securing a panel to a structure is provided. In one embodiment, the fastener includes a fastener having a fastener head and a threaded tail, and the fastener may be disposed through a structure and an external panel. The apparatus also includes a retainer housing positioned on the fastener head, where the retainer housing is detached from the fastener. A spring engaging the fastener and the retainer housing is also included within the retainer housing.

A modular safety fence assembly is disclosed. The safety fence may include a fence panel assembly having a top rail, a bottom rail, and mesh panel. The safety fence panel assembly may also support post assembly capable of supporting the fence panel assembly and an anchor assembly which may anchor the support post assembly to the floor using one or more relatively shallow holes formed in the floor.

A fastening device for fastening a shielding part to a partnered fastening part, having: a sleeve with a through opening for a fastener; at least two bridging elements, which are equipped with outer regions in a radial direction for indirect or direct contact with the opposing outsides of the shielding part and are fastened to the sleeve with inner regions in the radial direction; a damping element is positioned between the bridging elements in an axial direction and outside of the sleeve in the radial direction, characterized in that the damping element is embodied as a spring element and has at least one spring arm, which is resiliently flexible in the radial direction and is equipped to cooperate in a supporting way with a hole rim of a hole of the shielding part.

A pivot-mounting device has a lower nut (4) is fixing a bolt (2) to an object (A), and an upper nut (3) having a boss (32) rotatably supporting a rotatable member (B) is tightened on the bolt (2). A lower nut (4) includes an engagement recess (41) into which the boss (32) can be fitted with the outer peripheral surface of the boss (32) and the inner peripheral surface of the engagement recess (41) each being a straight cylinder shape. The boss outer peripheral surface (32) is slightly eccentric relative to a female thread hole (3a).