Abstract: A threaded insert with a replaceable nut element allows a user to replace only the nut element of the threaded insert rather than the entire threaded insert. The threaded insert includes an insertable housing, a replaceable nut, a retaining mechanism, and an attachment mechanism. The insertable housing allows the threaded insert to be engaged within a wall structure and is used to contain the replaceable nut. The replaceable nut allows the threaded insert to be engaged by a fastener such as a screw or bolt. The attachment mechanism allows the replaceable nut to be attached within and detached from the insertable housing. The retaining mechanism further secures the replaceable nut within the insertable housing and also prevents the replaceable nut from rotating within the insertable housing.

Abstract: A washer includes a conductive main body, a first seal portion, and a second seal portion. The main body includes an annular plate-shaped body and a protruding portion. The protruding portion protrudes in the thickness direction from the outer peripheral portion of the plate-shaped body. The first seal portion covers the inner peripheral surface at the inner peripheral portion and both surfaces in the thickness direction of the plate-shaped body. The second seal portion covers at least the distal end portion of the protruding portion.

Abstract: An expansion anchor including an anchor bolt, and at least one expansion shell located at the anchor bolt, wherein the anchor bolt includes a wedge zone for expanding the at least one expansion shell, a neck zone accommodating at least parts of the expansion shell, the neck zone being located rearwardly of the wedge zone, an abutment zone forming a rearward stop for the expansion shell, the abutment zone being located rearwardly of the neck zone, and a rear zone for intruding tensile force into the anchor bolt, the rear zone being located rearwardly of the abutment zone, wherein the anchor bolt is provided with at least one forwards groove, located in front of the abutment zone. The anchor bolt is provided with an aligned rearwards groove, which is aligned with the at least one forwards groove, and which is located rearwardly of the abutment zone.

Abstract: The clip includes a head part, a shaft part, a pin having first and second engaged parts at the shaft part, and a grommet having a flange part with an insertion hole, a leg part, and an engaging part engaging with/disengaging from the engaged part. The pin has the engaging part near the inner periphery of the insertion hole of the flange part. The pin has guide grooves between the first and second engaged parts to guide the movement of the pin while movably engaging the engaging part. Switching between a temporary fixing state and a permanent fixing state is conducted through movement of the shaft part associated with guiding by the guide grooves. When the pin in the permanent fixing state is rotated and moved in the pull-up direction associated with guiding by the guide grooves, engagement between the engaging part and the second engaged part is released.

Abstract: An insulated staple includes a staple including a crown extending between a pair of legs and an insulator including an insulator bridge extending between a pair of insulator legs and a channel extending from an end of one of the insulator legs to an end of the other of the insulator legs. The staple is at least partially received in the channel. A width of the channel at the insulator bridge is greater than a thickness of the staple crown. The insulator includes protrusions extending into the channel and defining therebetween a gap that, in absence of the staple, has a width less than the width of the staple crown to provide a friction fit between the staple crown and the insulator.

Abstract: A torque-limiting nut is provided. The torque-limiting nut has a washer, a threaded component, and a tool interface. The threaded component has a plurality of detents and the tool interface has a corresponding plurality of recesses and a spring groove. A plurality of engagement members are sized and shaped to fit within the plurality of detents and recesses. An elastic member in the spring grooves provides a compressive force to seat the pins in the corresponding detents to frictionally couple the threaded component and tool interface. When a torque required to rotate the tool interface exceeds a predetermined value, the pin moves against the spring and unseats from the detent such that the tool interface rotates without rotating the threaded component.

Abstract: A split nut with an outer body and an inner body formed of two jaws for gripping a threaded rod. The outer body has an inner surface defining tapered axial channel and includes a separator between the jaws to guide the jaws against an inner surface of the tapered axial channel. The inner surface can be circular in cross section and the outer body can also have an outer surface be circular in cross section. A lock is arranged to lock the jaws in an axial position at which the jaws are sufficiently close to force the jaws into threaded engagement with the threaded rod. The lock can also lock the jaws in an additional axial position at which the threaded rod can be moved freely axially between the jaws. The lock can comprise a locking pin movable within the outer body into respective slots corresponding to each locking position.

Abstract: The present invention provides compliant screws compatible with standard threaded holes that are self-anchoring via auxetic properties. Once a screw has been twisted in place using a mating screw driver, the screw won't be able to be removed unless it is broken, its surrounding material is torn out with the screw, or unless the screw driver itself is again used to twist the screw in the opposite direction. Thus, although reusable, the screw will never come out of its hole in the presence of vibrations or other cyclic or random loading scenarios. The screws are thereby suitable for critical joint applications where screws must never come loose. Non-limiting examples include satellite fasteners, high-speed vehicle bolts, pedicle screws, and other screws used to secure medical implants within a human body.

Abstract: A locknut for a threaded bolt which uses a pair of cooperating movable members that apply a three hundred and sixty degree engaging force on the threaded bolt locking the locknut to the threaded bolt. The pair of cooperating members are mounted within the body of the locknut. The locknut is the same physical size as a conventional nut that doesn't include any locking mechanism. The locknut can be loosened and reused multiple times.

Abstract: A fixing device has two threaded rings (10, 12), and aa membrane (14) held between them that is an integral part of this pair of rings (10, 12) and is kept at a distance from the rings (10, 12) by introduced slots (16, 18, 24, 26), rectilinear in a unmounted state. The slots open to the outside. By resting against only partially annularly extending webs (20, 22) and having a clamping bolt (30) usable to adjust the axial distance between the and passing through the membrane (14) between two adjacent webs (20, 22), in the unmounted state the membrane is oriented in an undeformed manner in parallel to the rings (10, 12) and in a mounted state it is moved between the webs (20, 22) in a deformed state in the direction of at least one of the rings to at least partially form a slanted or arc course, as soon as the distance (a) between a pair (10, 12) of rings (10, 12) is reduced by the clamping bolt. The clamping bolt (30) passes through adjacent slots (16, 18, 24, 26) separated from the membrane (14).

Abstract: 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.

Abstract: A spring nut for attaching a threaded object to a structure can include first and second arms extending from the base, and a wedge element. The wedge element can be configured to selectively operatively urge the first and second arms apart to release the threaded object from between the first and second arms.

Abstract: A reusable blind fastener including a bushing, a nut, a tail, a receiver, an expansion device, and a screw. The expansion device having an exterior surface that is discontinuous and configured for selective elastic deformation when engaging a portion of the screw.

Abstract: An anti-loosening bolt and nut assembly structure includes a bolt having a bolt head and a bolt shank, two elastic washers, and a nut. The two elastic washers are sleeved on the bolt shank. The two elastic washers are matched with the bolt head and the nut, respectively. Each elastic washer includes an annular body having an opening. A bottom of the annular body is provided with anti-slip teeth. A top of the annular body extends upward to form an anti-loosening ring. An outer inclined surface is formed on an outer side of the anti-loosening ring. The anti-loosening ring is provided with a plurality of first unidirectional teeth. The bolt head and the nut each includes a unidirectional anti-loosening device matched with the first unidirectional teeth.

Abstract: Embodiments are directed to first and second structural members that are threadingly-engaged with each other. The first and second structural members are dissimilar strength materials. Each structural member configured with a plurality of threads for the threading engagement. The thread thickness of each thread in the plurality of threads for the first structural member is not equal to the thread thickness of each thread in the plurality of threads for the second structural member.

Abstract: An installation nut includes a body, an upper cover, at least two threaded blocks, and a transmission member. The upper cover is fixedly connected to the body. An inner wall of each of the at least two threaded blocks includes an internal thread, and an outer wall of each of the at least two threaded blocks includes a first inclined surface and a first straight surface. The transmission member is movably disposed between the body and the upper cover. A top surface of the transmission member includes one or more transmission blocks configured to extend out of the upper cover. A lower end of the transmission member includes at least one second straight surface configured to couple with the first straight surfaces and at least one second inclined surface configured to couple with the first inclined surfaces.