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 device is configured to be mounted to a planar mounting panel, including, for example, a wall or ceiling of a home or other building. The device includes a housing, a fastener, a dogleg tab and a friction inducing member. The housing is configured to be received in an aperture in the mounting panel and includes a housing aperture. The fastener is disposed in the housing aperture. The dogleg tab is operatively coupled to one end of the fastener. The dogleg tab is configured to be disposed in a retracted position and to be disposed in an engagement position, in which engagement position the dogleg tab is disposed to engage an inside surface of the mounting panel. The friction inducing member is fixedly attached to the housing adjacent the housing aperture and friction-fit to the fastener.

A tolerance compensation element that compensates for tolerances in the distance between first and second components, includes a thread bolt having a first drive feature, a first thread of a first thread direction and a second thread of a second thread direction. Between the first and the second thread, a protrusion extends from the thread bolt radially to the outside. The element includes a first plastic overmold in the portion of the first thread, which provides a fastening structure for the fastening to the first component, and a second plastic overmold around the protrusion which extends radially to the outside, to provide an abutment portion abutting the second component when in use. A distance of the second plastic overmold to the first plastic overmold is changeable after overcoming a start-up torque between the first plastic overmold and the first thread in longitudinal direction of the thread bolt.

A retaining device for attachment of objects to a wall surface includes a main body, a fastening arrangement, and a cover lockable to the main body that arches over the fastening arrangement. The main body has a bottom side, that faces the wall during mounting, and a top side, that faces away and includes a retaining ring. The fastening arrangement includes a fastener and a centering cap which fixes the fastener. The bottom side of the main body has a circular-ring-shaped surface, on inner and outer edges of which, in each case, one closed encircling web is provided which faces away from the bottom side. Two passage openings are provided in the circular-ring surface between the top and bottom sides. When attached, the main body is pressed onto the wall and an adhesive is injected through one of the passage openings until it emerges again at the other passage opening.

Provided in this disclosure is a self-tightening nut and bolt system. The nut and bolt system can be configured to provide a consistent level of tightness and torque to reliably attach two mechanical components together. The nut comes with a microcontroller, and a motorized thread, where the microcontroller controls the tightness of the nut. The microcontroller allows the nut's tightness to be monitored, and controlled over time. This prevents the nut from becoming loose, and allows certain levels of tightness to be controlled over time.

Herein disclosed is a fall-proof component for a screw, comprising: a first structure configured to act on a portion of the screw to stop the screw; and a second structure configured to be fitted and latched onto a part which is to be fixed by the screw; wherein the first structure and the second structure cooperate with each other to prevent the screw from falling and the fall-proof component is configured to be adapted to be disposed adjacent to a head of the screw in a fitted status. Also disclosed are a corresponding fall-proof screw assembly, a corresponding fall-proof screw-nut assembly, a corresponding part suitable for the fall-proof screw assembly, a corresponding combination structure and a corresponding assembly. According to the disclosure, the fall-proof component has a simple structure and a low cost and can be reusable.

A fastener assembly that is configured to securely couple to a component includes a bolt, a limiter, and a grommet. The bold has a head, a shaft, and a medial ridge disposed around a portion of the shaft. The limiter has a brim and a tube, with the tube extending away from the brim. A grommet has a central passage extending through a top section. The top section further includes a central wall and a bottom surface. At least one tab extends from the bottom surface.

A fastener includes a male member having a head and a threaded portion protruding from the head along a longitudinal axis, and a female member having a body portion and a tubular tightening portion extending from the body portion along the longitudinal axis. The tubular tightening portion includes a thread bore receiving the threaded portion of the male member and a plurality of teeth formed on an outer surface of the tubular tightening portion. Further, the male member includes at least one arm extending form the head along the longitudinal axis, and the at least one arm of the male member includes a projection protruding radially inward from the arm and engaging the teeth of the female member.

A tolerance compensation fastening apparatus (1) for fastening a first vehicle component (200) to a second vehicle component (300) by way of a bolt (100), the fastening apparatus being set up to compensate for a tolerance within a tolerance compensation range. A fastening system including such a fastening apparatus, as well as to a method for fastening a first vehicle component to a second vehicle component by way of a bolt.

A captive fastener including a bushing having a body portion and an internal bore extending through the body portion A snap ring is mounted within the internal bore. A fastener having an elongated shaft is mounted within the bore and is adapted to reciprocate within the bore between retracted and extended positions. The elongated shaft has a shank diameter and threads formed on one end of the fastener. The snap ring engages the bolt when the shaft is extended and retracted. The fastener has a shank diameter which is 0.020 inches to 0.060 inches shorter than the bore diameter so that the fastener can be moved laterally within the bore.