A fastener or grommet is configured to securely clamp together one or more components. The fastener includes a body having a longitudinal axis and at least one wall. The body further includes two arms extending from the body on opposite sides at a flexure joint. Each of the arms includes a feedback feature that causes hesitation in the fastener during installation. The feedback feature further comprises an arched profile that extends the entire width of each of the arms.

A rotary fastening device includes a rotating axial member and an inertia member. The rotating axial member includes a base body, an input end, an output end and an engaging portion. The input end is disposed at one end of the base body and selectively connected to a wrench. The output end is disposed at the other end of the base body. The engaging portion is disposed on the base body. The inertia member is detachably connected to the rotating axial member, and includes a gravity portion and an engaging hole. The gravity portion is extended toward the output end of the rotating axial member so as to form an annular space. The engaging hole is communicated to the annular space.

A tree fastener assembly includes a cap, a base, a strap that connects the cap with the base, and a stem that extends from the base. A plurality of first wings extend radially outward from the stem.

A clip is structured for coupling together a first component and a second component. The clip includes a body portion and an opposing wall residing opposite and spaced apart from the body portion. At least one connecting member spans a space between the body portion and the opposing wall to connect the body portion and the opposing wall. The at least one connecting member is structured to enable resilient movement of each of the body portion and the opposing wall with respect to the other one of the body portion and the opposing wall responsive to a force acting on the body portion and/or a force acting on the opposing wall.

Disclosed are systems and methods for coupling a first panel to a second panel via a fastening system. The fastening system comprises fastener and a doghouse structure. The fastener includes a head assembly coupled to a collar. The collar is configured to pass through and to retain the second panel via an opening formed in the second panel. The doghouse structure defines a chamber that is configured to receive and secure the head assembly. The doghouse structure is positioned on the first panel and is configured to pass at least partially through the opening.

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.

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.

An improved cable routing fastener is provided. The cable routing fastener includes a base portion having an integral torsion element and includes a clip, for example a fir-tree clip, integrally joined to the torsion element. The torsion element includes first and second torsion bars on opposing sides of the rotatable clip, such that clip is rotatable relative to the base portion from a first position to a second position in response to an applied torque. The clip extends laterally outward from the base portion in the first position and extends downward from the base portion in the second position. The base portion and the clip are co-molded in the first position as a unitary article, with the clip being manually rotatable into the second position for attachment to an object, for example a vehicle panel or a vehicle pillar.

Disclosed are systems and methods for coupling a first panel to a second panel via a fastener. The fastener having a cap, a shank, pair of wings, and one or more PIA-retention features. The shank defines a central longitudinal axis that is substantially perpendicular to the cap. The pair of wings is resiliently coupled to the shank at a distal end thereof. The pair of wings includes a first wing and a second wing, each angled away from the central longitudinal axis. In some examples, the one or more PIA-retention features can be a pair of whiskers resiliently coupled to the shank and angled away from the central longitudinal axis. Each of the pair of whiskers is substantially perpendicular to the central longitudinal axis. In other examples, the one or more PIA-retention features include a first fin resiliently coupled to and angled away from the first wing and a second fin resiliently coupled to and angled away from the second wing. The first fin and the second fin can retain the fastener relative to the first panel.

The present disclosure provides fasteners movable between a first configuration and a second configuration, and fastener systems comprising same.