A corrosion-resistant screw-securing disc has an annular, stainless steel disc body for arrangement between a screw head and a flat support, with a disc upper side and a disc underside. The surfaces of the disc upper side and of the disc underside of the disc body are compacted by a stamping process, wherein the disc body has a material thickness of at least 1.5 mm and has a convex shape.

A corrosion-resistant screw-securing disc has an annular, stainless steel disc body for arrangement between a screw head and a flat support, with a disc upper side and a disc underside. The surfaces of the disc upper side and of the disc underside of the disc body are compacted by a stamping process, wherein the disc body has a material thickness of at least 1.5 mm and has a convex shape.

A profile clamp includes a clamping band and a first tensioning head arranged at a first end and a second tensioning head arranged at a second end of the clamping band. The first tensioning head includes a first opening and the second tensioning head includes a second opening. A screw is provided with a screw head and a screw body. The screw body may be guided through the first opening and the second opening. A threaded nut is provided, which may be arranged on the screw body when the screw body is guided through the first opening and the second opening. The screw body has a first threaded section and a second threaded section and a section of reduced diameter therebetween.

A thermally stabilized fastener system and method is disclosed. The disclosed system/method integrates a fastener (FAS) incorporating a faster retention head (FRH), fastener retention body (FRB), and fastener retention tip (FRT) to couple a mechanical member stack (MMS) in a thermally stabilized fashion using a fastener retention receiver (FRR). The MMS includes a temperature compensating member (TCM), a first retention member (FRM), and an optional second retention member (SRM). The TCM is constructed using a tailored thermal expansion coefficient (TTC) that permits the TCM to compensate for the thermal expansion characteristics of the FAS, FRM, and SRM such that the force applied by the FRH and FRR portions of the FAS to the MMS is tailored to a specific temperature force profile (TFP) over changes in MMS/FAS temperature. The TCM may be selected with a TTC to achieve a uniform TFP over changes in MMS/FAS temperature.

A vehicle-body structure of a vehicle of the present invention comprises a bumper support portion provided at a vehicle body of the vehicle to support to bumper, a connection portion connecting the bumper and the bumper support portion and supporting the bumper, and a slide allowance portion configured to allow the bumper to slide in a vehicle longitudinal direction relative to the bumper support portion when a longitudinal load having a specified magnitude or larger is applied to the bumper from a vehicle outside, wherein the connection portion is provided on an upper face of the bumper support portion, and the slide allowance portion is configured to allow the longitudinal sliding of the bumper independently from the supporting of the bumper by the connection portion.

A vehicle-body structure of a vehicle of the present invention comprises a bumper support portion provided at a vehicle body of the vehicle to support to bumper, a connection portion connecting the bumper and the bumper support portion and supporting the bumper, and a slide allowance portion configured to allow the bumper to slide in a vehicle longitudinal direction relative to the bumper support portion when a longitudinal load having a specified magnitude or larger is applied to the bumper from a vehicle outside, wherein the connection portion is provided on an upper face of the bumper support portion, and the slide allowance portion is configured to allow the longitudinal sliding of the bumper independently from the supporting of the bumper by the connection portion.

A screw structure includes a screw and a washer mounted on the screw. The bottom face of the screw head is provided with a plurality of pressing portions. Each of the pressing portions has a top provided with a first plane and a bottom provided with a second plane having an area smaller than that of the first plane. Each of the pressing portions is provided with a first inclined face and a first steep arcuate face. The first inclined face is directed toward a clockwise direction of the screw when the screw is screwed. The first steep arcuate face is directed toward the external thread. When the screw is screwed into an article, the pressing portions press the washer, and an outer diameter of the washer is expanded outward and forms an expansion.

A track link and track shoe bolted connection includes a track link with a clearance hole, a track bolt with a free end extending through the clearance hole, and a track nut with a top surface that is spaced away a minimum distance from the clearance hole. The track link includes a rail surface, a bottom surface, and a midplane between the rail surface and the bottom surface. The top surface of the track nut is at or above the midplane.

A track link and track shoe bolted connection includes a track link with a clearance hole, a track bolt with a free end extending through the clearance hole, and a track nut with a top surface that is spaced away a minimum distance from the clearance hole. The track link includes a rail surface, a bottom surface, and a midplane between the rail surface and the bottom surface. The top surface of the track nut is at or above the midplane.

A method for manufacturing washer includes steps of providing a wire material, deforming part of the wire material to be a ring shape, cutting off the part in the ring shape to obtain a ring-shaped wire material, and forging the ring-shaped wire material into a washer having a split defined by end surfaces at two opposite ends of the ring-shaped wire material.