A fastener assembly to be used in the construction of semi-trailers consisting of a first fastener having a head and a shank, a mating second fastener, and a plurality of axially extending knurls formed on the shank. The knurls engage in a hole for receiving the first fastener to prevent rotation and removal of the first fastener. The first fastener may also be provided with an encapsulating cover with two sealing points on its underside to seal the fastener to a surface through which the fastener is inserted.

A compensating fastener assembly is configured to secure a fastener to a surface element. The compensating fastener assembly includes a compression limiter having a cylindrical main body and a flange, the cylindrical main body defining a channel and a longitudinal axis. The compensating fastener assembly further includes a spring defining a central passage. The central passage of the spring is configured to receive the main body of the compression limiter such that a first end of the spring is configured to be disposed adjacent the flange of the compression limiter.

An anti-tampering device includes a housing with a bolt channel and a lock channel. The lock channel is aligned with, intersects and is perpendicular to the bolt channel. A head of a bolt and a portion of a shank of a bolt is received in the bolt channel. A lock received in the lock channel extends into the bolt channel, in proximity to the shank of the bolt, when the lock is in a locked position. The portion of the lock extending into the bolt channel prevents removal of the head of the bolt from the bolt channel.

A fixture set for fixing an accessory to a wall includes a bolt; a splitter having a sleeve portion and a wedge portion; and a metal anchor configured to be screwed to the bolt and having radially expandable arms configured to slide along surfaces of the wedge portion when the anchor is urged to slide in a first direction. The arms have a free end configured to lock the anchor against the wall upon radial expansion of the arms. The splitter has a catch situated entirely within minimum bounding cylinder of the sleeve portion. The free end of a respective arm is barbed and configured to be caught in the catch when the anchor is urged to slide in a second direction, opposite to the first direction, after having slid the anchor onto the splitter in the first direction with the barbed free end having passed the catch.

Floating fastener includes base including main body provided with through hole, resisting ring protruded inside through hole, seat body extended around main body and docking portion protruded from seat body, positioning member having shank inserted into through hole, head located at one end of shank outside main body, joint portion located at an opposite end of shank to move in and out of docking portion and stopper provided between joint portion and shank to abut against resisting ring, elastic member set on shank and stopped between head and resisting ring, and pad provided with inner hole which is inserted outside docking portion of base, so that pad abuts against seat body near the docking portion. The pad is made of soft material, which can achieve the purpose of absorbing the shaking and vibration of the floating fastener under the influence of external force.

Adjustable support links for aircraft are disclosed herein. An adjustable support link includes a first rod end including a first shaft with first external threads, a second rod end including a second shaft with a bore having first internal threads, and a barrel nut at least partially disposed in the bore of the second rod end. The barrel nut has second external threads engaged with the first internal threads. The barrel nut having a channel. The first shaft is at least partially disposed in the channel. The channel has second internal threads engaged with the first external threads of the first rod end, such that rotation of the barrel nut in a first direction causes the first and second rod ends to move toward each other and rotation of the barrel nut in a second direction causes the first and second rod ends to move away from each other.

A method of assembling a fastener structure on a plate body is introduced. The fastener structure includes a body portion and a fastening body. The body portion has a solderable layer, and the solderable layer is soldered to a plate body. The fastening body combines movably with the body portion. The fastening body has a head and a fastening portion. The body portion or the fastening body is provided on the plate body for soldering after it is picked up by a tool so that the body portion can combine with the plate body. Also, the body portion or the fastening body combines with an assisting pickup unit, and the fastener structure is provided on the plate body for soldering after it is picked up by a tool through the assisting pickup unit so that the body portion can combine with the plate body.

A wheel fastener alarm assembly is provided having a fastener body with a first portion defining a wrenching surface and a cavity, and a second portion with a threaded portion to attach and detach from a wheel of a vehicle. A sensor array is disposed in the cavity of fastener body to detect an attribute of the fastener body and generate an output signal based on the attribute of the fastener body. An antenna connected to the sensor array to transmit the signal to a remote location. A cap is secured to the first portion of the fastener body and covers the wrenching surface and the cavity opening to define a capped fastener body.

A bolt catcher and extractor for use with a separation nut and an attaching preloaded bolt that secure a payload to a launch vehicle or spacecraft. The bolt catcher extracts the attaching bolt from the separation nut, pulls it clear of the interface between the launch vehicle or spacecraft and the released payload, and captures it within the bolt catcher housing. The released bolt may have kinetic energy due to the strain energy stored by the pre-release bolt preload. The bolt catcher may have a magnetic eddy current damper that controls the bolt velocity during bolt extraction and dissipates the bolt kinetic energy as heat. The bolt may be magnetically non-impact captured within the bolt catcher. Bolt momentum at the end of the bolt extraction is less than 2% of that of bolt catchers of the prior art. Shock to the released payload or deployable equipment is near zero.

A bolt catcher and extractor for use with a separation nut and an attaching preloaded bolt that secure a payload to a launch vehicle or spacecraft. The bolt catcher extracts the attaching bolt from the separation nut, pulls it clear of the interface between the launch vehicle or spacecraft and the released payload, and captures it within the bolt catcher housing. The released bolt may have kinetic energy due to the strain energy stored by the pre-release bolt preload. The bolt catcher may have a magnetic eddy current damper that controls the bolt velocity during bolt extraction and dissipates the bolt kinetic energy as heat. The bolt may be magnetically non-impact captured within the bolt catcher. Bolt momentum at the end of the bolt extraction is less than 2% of that of bolt catchers of the prior art. Shock to the released payload or deployable equipment is near zero.