A threaded fitting comprising a first plurality of threads from a first end of the fitting to a transition thread and a second plurality of threads from the transition thread to a second end of the fitting. The first plurality of threads is configured to provide a labyrinth type seal minimizing the migration of at least dust and/or gases across a thick-walled enclosure. The second plurality of threads is configured to engage a lock-nut in thin-walled enclosures, or a plurality of pre-formed threads within an aperture of thick-walled enclosures, for minimizing the migration of at least fluids/water across one of the thin- or thick-walled enclosure. The first and second plurality of threads are serially-arranged and may be used either thin or thick-walled enclosures to retard a passage of at least one of either gas, fluid, dust and flame.

A device includes a head having a material having a plurality of pores, wherein at least some of the pores from the plurality of pores each have a size that is smaller than a water molecule and larger than an air molecule such that the air molecules can pass through the pores and the water molecules are prevented from passing through the pores; and an elongated body extending from the head and having a thread on an outer surface thereof and having a conduit extending longitudinally through the elongated body to the head. The device is configured to fasten a first surface to a second surface using the thread of the elongated body.

A VVT includes: a cylindrical case to rotate synchronously with a crankshaft; a rotor housed in the case and to rotate synchronously with a camshaft; a first cover that has a first through hole and closes one opening of the case; a second cover that has a second through hole and closes another opening of the case; a first fastening member that fixes, in a state of passing through the first through hole, the first cover and the case; and a second fastening member that fixes, in a state of passing through the second through hole, the second cover and the case.

A fastening system for aerospace vehicles including a dielectric nut retainer strip formed of dielectric material and having at least one fastener thru hole and at least one cap receiver portion. Also included are an anti-rotation nut retainer portion integrally formed in the dielectric nut retainer adjacent to the at least one fastener thru hole, a cap configured to mate with the at least one cap receiver portion, a fastener covered in a conductive coating, and an anti-rotation nut configured to fit in the anti-rotation nut retainer portion and couple with the fastener.

A mounting device including a base having an open bottom, a longitudinal axis, and a linear guide on the base. The linear guide guides support hardware in linear movement along the longitudinal axis. An internal cavity is under the base for containing a sealant against and in cooperation with a roof when the mounting device is secured to the root. An opening is though the base is for receiving a fastener when the mounting device is secured to the roof. The opening is in communication with the internal cavity. The linear guide extends beyond the internal cavity.

Methods and apparatus for retaining a fastener receiver are disclosed. An example apparatus includes a retainer to retain a nut assembly adjacent an object. The retainer includes a first plate defining a first opening. The first plate is to couple to the object. The first opening is to receive a portion of the nut assembly when the retainer is coupled to the object. The retainer includes a second plate defining a second opening and including a first deflectable tab adjacent the second opening. The second plate is to couple to the first plate opposite the object. The deflectable tab of the second plate is to cover a portion of the first opening of the first plate. The first deflectable tab is to deflect to receive and retain the portion of the nut assembly in the first opening when the retainer is coupled to the object.

Methods of using and repairing seal caps as well as constructions comprising seal caps, including in some embodiments seal caps which may be useful in sealing fasteners that protrude into fuel storage cells in aircraft. In some embodiments, methods include the use of optically translucent seal cap and application of a second quantity of sealant to fill voids observed within the interior of the seal cap after cure of a first quantity of sealant.

A fastening system includes a fastener having a shank with a threaded portion and a head region disposed at an end of the shank and defining a retaining cavity in an end thereof. A clip includes a base region snap fit in the retaining cavity of the fastener and an anchor region for anchoring a wire harness, hose, cable sheath or other component.

A fastening system includes a fastener having a shank with a threaded portion and a head region disposed at an end of the shank and defining a retaining cavity in an end thereof. A clip includes a base region snap fit in the retaining cavity of the fastener and an anchor region for anchoring a wire harness, hose, cable sheath or other component.

Self-sealing fasteners and associated building panels, systems, and methods are provided. In one aspect, a fastener includes an elongated fastener body with an external surface extending between the first end and the second end, and a coating material disposed on at least a portion the external surface. In another aspect, a fastener includes an elongated fastener body with an external surface extending between the first end and the second end, and a polymer annulus surrounding at least a portion of the external surface of the of the elongated fastener body at or adjacent the head of the fastener.