A centering screw for aligning two elements, particularly a workpiece and a carrier, relative to each other, the centering screw having a first end section with a first outside diameter and a first length, and a second end section with a second outside diameter and a second length, the first end section having a first thread, at least in sections, and a cone being provided for the centering. In this case, the centering screw has the cone in an intermediate section between the first end section and the second end section, the cone having a diameter changing along the intermediate section, the diameter at an end of the cone facing away from the first end section being larger than the first outside diameter, and the end of the cone facing away from the first end section being assigned an axial stop facing away from the first end section.

A centering screw for aligning two elements, particularly a workpiece and a carrier, relative to each other, the centering screw having a first end section with a first outside diameter and a first length, and a second end section with a second outside diameter and a second length, the first end section having a first thread, at least in sections, and a cone being provided for the centering. In this case, the centering screw has the cone in an intermediate section between the first end section and the second end section, the cone having a diameter changing along the intermediate section, the diameter at an end of the cone facing away from the first end section being larger than the first outside diameter, and the end of the cone facing away from the first end section being assigned an axial stop facing away from the first end section.

A screw includes a threaded shank and a head with a first surface. Communicating sockets formed in the first surface include a Pozi-type socket and a drive socket. The drive socket includes rounded portions, arched portions alternating with the rounded portions, and a conical portion connected to the rounded portions and the arched portions to define a first reference line and a second reference line parallel to a central axis of the head. The rounded portions are inclined outwardly from the first reference line, and the arched portions are inclined outwardly from the second reference line. Thus, a first room enclosed by the rounded portions and the arched portions increases gradually towards the first surface. By a combination of the above sockets, the head cooperates with different driving tools for delivering driving force efficiently and is more convenient to use.

A fastener including a pin member having a shank portion, a threaded portion having a thread, a lock portion having at least one lock groove, and a pull portion located having at least one pull groove. The threaded portion is adapted to be engaged threadedly with a threaded hole of a workpiece to install the pin member therein. The fastener includes a swage collar adapted to be installed into the at least one lock groove of the lock portion to secure a plurality of workpieces. The pull portion is adapted to break off when the fastener is installed.

A nut adapted to disengage with a threaded bolt, the nut comprising a base portion integrally formed to a top portion. The nut includes a bore positioned along a central axis through the base portion and the top portion, wherein the top portion is tapered between circumference of the base portion and the bore of the top portion. The tapering is at an angle between 0° to 45° relative to the diameter of the base portion; the base portion comprises at least two cavities, wherein the at least two cavities extend vertically into the base portion.

A fastening screw and a height-adjustable table using the same are provided. A threadless transition portion is provided between a threaded section and a head portion of the fastening screw to increase the contact area between the screw and a workpiece, and to cooperate with a shaft portion to fasten the workpiece. The transition portion is provided with a tapered wall surface, and the transition portion expands from the threaded section to the head portion of the screw. The screw offers a tension expanding outward in a circumferential direction of a mounting portion. An area of a joint between the transition portion and the head portion does not exceed a circumferential area of threads. In a direction of a central axis of the screw, the projection of the transition portion overlaps that of the shaft portion, which prevents the transition portion from falling off the workpiece or damaging the workpiece.

Low-profile fasteners with springs that are either integrated with the fastener or are a physically separate component can provide a more evenly distributed load to a heat transfer device, such as a vapor chamber or a heat pipe. The low-profile fasteners do not increase the height of the base of a mobile computing device as the spring and the portion of the fastener that extends past the spring fit within a recess or cavity of the heat transfer device. The spring can be a diaphragm spring, a wave spring, or another suitable spring. The use of low-profile fasteners with springs to fasten a heat transfer device to a mainboard may allow for designs with a smaller mainboard area, which can leave room for a larger thermal management solution (which can increase cooling capacity) and allow for a greater thermal design power for the system.

Low-profile fasteners with springs that are either integrated with the fastener or are a physically separate component can provide a more evenly distributed load to a heat transfer device, such as a vapor chamber or a heat pipe. The low-profile fasteners do not increase the height of the base of a mobile computing device as the spring and the portion of the fastener that extends past the spring fit within a recess or cavity of the heat transfer device. The spring can be a diaphragm spring, a wave spring, or another suitable spring. The use of low-profile fasteners with springs to fasten a heat transfer device to a mainboard may allow for designs with a smaller mainboard area, which can leave room for a larger thermal management solution (which can increase cooling capacity) and allow for a greater thermal design power for the system.

A fastener and a specialized driver for use in furniture or shelving assembly where the fastener comprises a fastener head with an aperture centered therein and a fastener body extending from connection with the fastener head, the fastener body having an interior cavity along a length of the fastener body. A spring biased plunger is slidable within an interior cavity of the fastener body between a first position where the plunger has a surface configured to fit within the aperture and in a second position the plunger is spaced apart from the aperture. The driver is removably couplable to the fastener to depress the plunger and transfer torque to the fastener for installation. After installation, the plunger resumes a position plugging the aperture and the tolerance between the plunger and the aperture is sufficiently tight to effectively obscure any seam between the plunger and the aperture such that the fastener head surface appears continuous.

A fastener including a pin member having a shank portion, a threaded portion having a thread, a lock portion having at least one lock groove, and a pull portion located having at least one pull groove. The threaded portion is adapted to be engaged threadedly with a threaded hole of a workpiece to install the pin member therein. The fastener includes a swage collar adapted to be installed into the at least one lock groove of the lock portion to secure a plurality of workpieces. The pull portion is adapted to break off when the fastener is installed.