An apparatus for applying a thermoplastic powder to internal threads of a fastener includes a vacuum nozzle having an end adapted to engage a first surface of the fastener. A spray tube is sized to be inserted within the bore of the fastener and communicates with a source or sources of thermoplastic powder and pressurized air. A bushing is mounted on the spray tube so that the spray tube is able to slide with respect to the bushing. The bushing is adapted to engage a second surface of the fastener. The spray tube and bushing are movable between clamping positions, where the vacuum nozzle and the bushing engage the first and second surfaces of the fastener, and release positions where the vacuum nozzle and the bushing do not engage the first and second surfaces of the fastener. A fastener holder holds the fastener between the vacuum nozzle and the bushing so that when the vacuum nozzle and the bushing are in the clamping positions, the spray tube enters the bore of the fastener and sprays thermoplastic powder on the internal threads of the fastener with excess thermoplastic powder collected by the vacuum nozzle. The vacuum nozzle and bushing may be machined and to permit either, both or neither of first and second chamfers of the fasteners to also be coated.

An apparatus for applying a thermoplastic powder to internal threads of a fastener includes a vacuum nozzle having an end adapted to engage a first surface of the fastener. A spray tube is sized to be inserted within the bore of the fastener and communicates with a source or sources of thermoplastic powder and pressurized air. A bushing is mounted on the spray tube so that the spray tube is able to slide with respect to the bushing. The bushing is adapted to engage a second surface of the fastener. The spray tube and bushing are movable between clamping positions, where the vacuum nozzle and the bushing engage the first and second surfaces of the fastener, and release positions where the vacuum nozzle and the bushing do not engage the first and second surfaces of the fastener. A fastener holder holds the fastener between the vacuum nozzle and the bushing so that when the vacuum nozzle and the bushing are in the clamping positions, the spray tube enters the bore of the fastener and sprays thermoplastic powder on the internal threads of the fastener with excess thermoplastic powder collected by the vacuum nozzle. The vacuum nozzle and bushing may be machined and to permit either, both or neither of first and second chamfers of the fasteners to also be coated.

A system to prevent a sliding nut in a channel in a bar from escaping from the channel, and to prevent the nut from entering a no-go-zone at the end of the channel. The system is adjustable to position the nut at a desirable location along the length of the channels to mount coupling devices onto the bar.

This threaded fastening element (2) comprising a threading (14) extending along a central axis (A), the threading (14) having at least one screw thread having an apical angle decreasing gradually, continuously and monotonously, between a first apical angle (α1) and a second apical angle (α2) strictly smaller than the first apical angle. The threaded fastening element is a screw or a nut.

This threaded fastening element (2) comprising a threading (14) extending along a central axis (A), the threading (14) having at least one screw thread having an apical angle decreasing gradually, continuously and monotonously, between a first apical angle (α1) and a second apical angle (α2) strictly smaller than the first apical angle. The threaded fastening element is a screw or a nut.

A sealing process of LED modules includes a waterproof wire put through a wire-through hole of a heat sink to be connected with a positive-negative solder joints on a PCB board, which are subjected to glue sealing treatment. A waterproof sealing process is operated between the waterproof wire and wire-through hole. The PCB board is fixed on the heat sink. One sealing ring is placed into a groove. A ring of liquid silica gel is evenly applied along the other groove. The heat sink installed with the PCB board and the waterproof wire are inversely buckled on the lens set which is fixed with the solid silica gel ring and liquid silica gel. At least two waterproof sealing rings are used to isolate an LED chip from the outside so as to prevent all water vapor or other harmful gases from corroding the chip and the PCB.

A sealing process of LED modules includes a waterproof wire put through a wire-through hole of a heat sink to be connected with a positive-negative solder joints on a PCB board, which are subjected to glue sealing treatment. A waterproof sealing process is operated between the waterproof wire and wire-through hole. The PCB board is fixed on the heat sink. One sealing ring is placed into a groove. A ring of liquid silica gel is evenly applied along the other groove. The heat sink installed with the PCB board and the waterproof wire are inversely buckled on the lens set which is fixed with the solid silica gel ring and liquid silica gel. At least two waterproof sealing rings are used to isolate an LED chip from the outside so as to prevent all water vapor or other harmful gases from corroding the chip and the PCB.

An apparatus for securing a side mirror to a vehicle includes a solid body having base and top surfaces. The base surface has a contour complementary to that of an exterior surface of the vehicle. First and second holes are formed through the solid body from the base surface to the top surface. Positioning the base surface face-to-face with the exterior surface of the vehicle aligns the first hole with a first threaded hole in the vehicle and aligns the second hole with a second threaded hole in the vehicle. Each of the first and second holes has a counterbore that opens to the top surface of the rigid body. A third hole in the solid body opens to the top surface between the counterbores of the first and second holes, wherein the third hole is threaded to receive a threaded screw that attaches a mirror.

An apparatus for securing a side mirror to a vehicle includes a solid body having base and top surfaces. The base surface has a contour complementary to that of an exterior surface of the vehicle. First and second holes are formed through the solid body from the base surface to the top surface. Positioning the base surface face-to-face with the exterior surface of the vehicle aligns the first hole with a first threaded hole in the vehicle and aligns the second hole with a second threaded hole in the vehicle. Each of the first and second holes has a counterbore that opens to the top surface of the rigid body. A third hole in the solid body opens to the top surface between the counterbores of the first and second holes, wherein the third hole is threaded to receive a threaded screw that attaches a mirror.

A nut is configured to be secured to a bolt. The nut includes a main body that defines an axially aligned bore with threads disposed on an inner wall thereof. Further, the nut includes a dome-shaped head that has an axially aligned aperture and that is provided to be deformed by threads on the bolt when a predetermined burst-through torque is applied thereto.