A screw, in particular for housings, has an elongated section provided at least in parts with a thread, and a screw head. A cone-shape section may be arranged between the screw head and the elongated section, wherein the point of the conical section connects to one end of the elongated section, and the underside of the screw head may be arranged opposite the base surface of the conical section, and a groove for accommodating a seal may be provided between the underside of the screw head and the base surface of the conical section.

An anchor having a sleeve, a bolt which passes through the sleeve and at least one expansion element that is positioned in front of the sleeve and that is axially supported on the sleeve, whereby the bolt has an expansion area for the expansion element, is provided. According to the invention, it is provided for the sleeve to have a wavy shape with axial wave peaks in which the outer radius of the sleeve as well as the inner radius of the sleeve each have a maximum, and with wave valleys in which the outer radius of the sleeve as well as the inner radius of the sleeve each have a minimum.

The present invention relates to side tensioning assemblies for retaining screen media to the side plates of a vibrating-type screening machine. The side tensioning assembly includes a tensioning rail and at least one angle box mountable to a side plate. At least one bolt assembly provided for fastening the tensioning rail to the side plate and to angle box. Bolt assembly is provided with is a shoulder bolt that is secured to a terminal end of the bolt. The angle box includes an aperture sized to allow the bolt assembly passage therethrough, and a movable plate with a cutout. The cutout is sized larger than the bolt but smaller than a nut. The movable plate has a bolt-securing position and a bolt-releasing position to allow access to the aperture in the angle box such that the bolt assembly can be detached from the angle box without being disassembled.

The staking bolt of the present invention includes a head 10 and a shank 11 having an external thread 12. At the upper end of the shank 11, a ring-shaped protrusion 20 and a ring groove 21 located closer to the head relative to the ring-shaped protrusion 20 are formed. The head 10 is flat, and on the bearing face 13, a whirl-stop protrusion 14 having a plurality of radially extending arms 15 protrudes with a thickness of t. The minimum diameter D between respective arms 15 is larger than the outer diameter d of the ring-shaped protrusion 20, and t×(D−d)/2 which is the longitudinal cross-sectional area A of the minimum diameter portion of the whirl-stop protrusion 14 is equal to or greater than the longitudinal cross-sectional area of the ring groove 21.

A hole expanding screw comprises a screw head and a screw shank. The screw head includes a top and a neck extending from the top and gradually shrinking toward a direction opposite the top. The screw shank includes a shank body connected with the neck, a hole expanding portion connected with the shank body, a cone connected with the hole expanding portion, a thread running helically from the cone through the hole expanding portion to the shank body. The outer diameter of the hole expanding portion is greater than the diameter of the shank body and smaller than the diameter of the thread. The hole expanding portion includes a plurality of hole expanding blocks arranged into several rows and a plurality of debris exhaust channels formed among the hole expanding blocks, wherein each two neighboring rows of the hole expanding blocks are arranged in a staggered way.

An electronic device enclosure includes a rear cover, a securing bracket, and a securing assembly. The rear cover includes a hook. The securing bracket includes a latching portion engaged with the hook. The securing assembly includes a securing member and a sliding shaft. The securing member is secured to the securing bracket. The mounting member is movable relative to the securing bracket to slide the sliding shaft. The sliding shaft presses edges of the limiting slot to push the rear cover away from the securing bracket to disengage the hook from the latching portion when sliding.

A gas turbine engine includes a bushing that is non-round in cross-section, the bushing receivable within an aperture. A fastener passes through the bushing to retain a second component to a third component with respect to the first component.

An apparatus for assembling screws, the apparatus includes a rack and a holder. The holder is arranged on the rack. The holder includes a convex and an opening. The opening is communicated with the convex, the screw is capable of moving in the opening and latched to and fasten to the convex.

A single shear attachment device with an eccentric axis and an eccentric sleeve, a mechanical assembly including such a device and an assembling process. The attachment device includes an eccentric axis as well as an eccentric sleeve intended to be mounted on the eccentric axis in order to correct, by an appropriate positioning in rotation of the eccentric sleeve on the eccentric axis, the possible clearance between superposed circular holes of mechanical components that have to be linked together by means of the attachment device, the attachment device also includes blocking means configured to be able to block in rotation the eccentric axis and the eccentric sleeve, said attachment device thus allowing to generate a quick and clear attachment, that is able to correct clearances locally.

A caulking bolt includes a shank and a head, wherein a bearing face of the head has, along an outer circumference of the shank, a groove having a ring shape into which a crimped member is fitted. The caulking bolt includes projections and depressions for whirl-stop in the groove.