A pair of end plates disposed respectively at end faces of a battery stack are connected by bind bars and apply pressure to the battery stack to immobilize the battery stack. Each of the end plates includes a locking hole extending along a surface of the end plate. The end plate is fixed to a base plate by a fixing bolt inserted through the locking hole. The locking hole includes a deformation space that allows deformation of the fixing bolt when cell reaction force of the battery stack is caused.

A vibration dampening limb bolt preferably includes a hollow bolt and a vibration-dampening member. The hollow bolt includes a countersunk head and a bore. At least a portion of the bore is threaded to form a threaded bore. It is preferably that a tool cavity in the countersunk head has a multiple tooth cavity configuration, which would be shaped to receive a TORX bit. The vibration-dampening member includes a vibration block and a threaded shaft. The threaded shaft extends outward from a bottom of the vibration block. The threaded shaft is threadably engagable with the threaded bore. The vibration dampening material is obtained from a vibration stabilizer manufacturer. A second embodiment of the vibration dampening limb bolt includes the hollow bolt with an unthreaded bore and a vibration-dampening member with a rod projection having at least one o-ring.

A lock tight nut and bolt system resistant to loosening due to vibration. The lock tight nut and bolt system includes an upper nut that has a shank part. The upper nut has first threads that are off center from a center of a bolt. The upper nut is configured to receive the bolt. A lower nut has a socket part and second threads that are centered with the center of the bolt. The socket part corresponds with the shank park of the upper nut. The upper nut and the lower nut are concentric with the center of the bolt. The system further may include the bolt.

Methods and systems are provided for a fastening assembly. In one example, the fastening assembly includes a vibration dampening element, a two-piece insert, a lower portion, and a fastener configured to engage with the two-piece insert and the lower portion of the assembly. The fastening assembly may be at least partially assembled during manufacture of components to be coupled via the fastening assembly, allowing the components to be readily coupled during final installation of the fastening assembly.

An exhaust gas turbocharger assembly includes a turbocharger, an actuator, and a bolted connection for releasably securing the actuator housing on a housing flange of the turbocharger housing. The bolted connection includes a through opening, an aperture bounded at the circumference by an internal thread made of a metal, and a fit bolt with a bolt body which merges axially into a bolt head. The bolt body has a first axial body section with an external thread formed in a manner complementary to the internal thread of the aperture, and a second axial body section arranged axially between the bolt head and the first body section. The fit bolt engages through the through opening of the actuator housing in the internal thread of the aperture with the external thread to clamp the actuator housing between the housing flange of the turbocharger housing and the bolt head of the fit bolt.

A fastener including a body that extends between a first end and a second end and a head that is engaged with the body at the first end. Further, the body includes a first section with a first outer diameter and a first set of threads oriented in a first direction. The body further includes a second section with a second outer diameter and a second set of threads oriented in a second direction, opposite the first direction. Also, the first section is positioned closer to the head than the second section, and the first set of threads is self-tapping.

An assembly includes a first part made of composite material and a second part, which parts are held one against the other by at least one fastener system having a fastener element with a head from which there extends a shank. The fastener system further includes a bushing, the bushing including a collar presenting an inside face and an outside face of conical shape. The head of the fastener element bears against the inside face of the collar, while the outside face of the collar bears against a countersink formed in the first part.

The present disclosure provides a spacer for a shipping bolt. In one embodiment, the spacer includes a head, an elongated body, and an insert. The head and the elongated body each comprise a durometer greater than the insert. Together, the head and the elongated body provide a structure within which the insert is disposed to absorb forces otherwise imposed upon a bolt inserted through the spacer. The disclosure also provides a method of using the spacer to secure a component of an appliance. In a second embodiment, the spacer is of a unitary construction and manufactured of an elastomeric material. In the second embodiment the spacer is configured to absorb forces imposed upon a bolt inserted therethrough, using a combination of specially designed ribs and webs interconnecting concentric cylinders that partially define the opening.

A connecting hanger bolt according to an aspect of the present invention is a hanger bolt which is inserted into a hanging groove rail having an opening narrower than the outer diameter of a bolt head and extending in a hanging groove rail longitudinal direction and from which a device is hangable. The connecting hanger bolt includes: a plurality of bolts which move in the hanging groove rail longitudinal direction in the hanging groove rail and whose shaft portions pass through the opening; and a connecting member which connects the plurality of bolts to each other, and keeps an interval in the hanging groove rail longitudinal direction between the plurality of bolts adjacent to each other.

A threaded fastener composed of separate upper and lower portions with a small axial freedom of movement relative to one another. After being threaded into a blind hole together, the portions are moved relative to one another and locked in place, creating a distribution of stresses which resists backing-out of the fastener without the various drawbacks which limit prior art solutions to this and similar threaded fastener applications.