A system is disclosed which utilizes a stabilization disk 30 or rigid cup containing adhesive which is bonded to an underside of a circuit board and then bolted to a chassis of a piece of military electronic equipment, so as to create a mounting location between the circuit board and the chassis where the circuit board is lacking a regular fastener receiving mounting hole therethrough.

This invention is a fastener. The fastener has a body, a clamper and a restraint. The body is provided with a coupling part, which comprises a discontinuous raised rib going around an outer surface of the coupling part; the clamper is fitted over the coupling part; a recess going around an inner surface of the clamper; the raised rib is fitted to the recess; the restraint is arranged to surround the clamper, so the restraint is capable of restricting the clamper in a certain position range of the body.

This invention is a fastener. The fastener has a body, a clamper and a restraint. The body is provided with a coupling part, which comprises a discontinuous raised rib going around an outer surface of the coupling part; the clamper is fitted over the coupling part; a recess going around an inner surface of the clamper; the raised rib is fitted to the recess; the restraint is arranged to surround the clamper, so the restraint is capable of restricting the clamper in a certain position range of the body.

A joint for a cutting tool includes a bolt with a head in a first end, with a thread in a second end, and with an intermediate section between the first end and the second end, which during attachment of two objects rotatably to each other protrudes trough openings in said objects. A nut is received on the thread. In order to provide an easy solution for adjusting the tension of the joint and at the same time preventing accidental loosening of the joint, the bolt is provided with a cavity. An expansion bolt with a threaded end protrudes into the cavity and expands the second end of the bolt.

Fastener assemblies and nut plate assemblies include a plate member, a shell member and a floating nut disposed within the shell member and defining a bore configured to receive a threaded fastener. The fastener assemblies and nut plate assemblies also include at least one magnetic component disposed within the shell member and configured to switch the nut plate assembly between a locked configuration and an unlocked configuration

A locking apparatus for locking the rotational position of a fastener component which is rotatable about an axis relative to a structure. The locking apparatus includes a collar and a rigid arm. The collar is configured to engage with the fastener component such that relative rotation of the collar and the fastener component is substantially prevented. The arm has a first end configured to engage with the collar such that rotation of the collar relative to the first end is substantially prevented, and a second end configured to engage with the structure such that rotation of the arm relative to the structure is substantially prevented. The collar has an inner surface having a first finite order of rotational symmetry about the axis, and an outer surface having a second, larger, finite order of rotational symmetry about the axis.

A fixture of the present disclosure includes: a first fitting fixed to a first object; a second fitting fixed to a second object; and a positioning bolt fixing a position of the second fitting relative to the first fitting. The first fitting includes: a cylindrical portion extending in a z direction and including a first elongated hole on an outer peripheral surface of the cylindrical portion, the first elongated hole extending in a circumferential direction; a shaft that turns inside the cylindrical portion and includes a screw hole corresponding to the positioning bolt; and a first fixing portion to which the first object is fixed. The second fitting includes: a movable portion including a second elongated hole extending in an x direction and through which the positioning bolt penetrates; and a second fixing portion to which the second object is fixed.

A fixture of the present disclosure includes: a first fitting fixed to a first object; a second fitting fixed to a second object; and a positioning bolt fixing a position of the second fitting relative to the first fitting. The first fitting includes: a cylindrical portion extending in a z direction and including a first elongated hole on an outer peripheral surface of the cylindrical portion, the first elongated hole extending in a circumferential direction; a shaft that turns inside the cylindrical portion and includes a screw hole corresponding to the positioning bolt; and a first fixing portion to which the first object is fixed. The second fitting includes: a movable portion including a second elongated hole extending in an x direction and through which the positioning bolt penetrates; and a second fixing portion to which the second object is fixed.

A fastening nut device for fastening one substrate to another includes a cylinder, which is circumferentially larger proximate to a first end thereof, thus defining a first section and a second section of the cylinder. External threading, which is reversed, is positioned on the second section and extends from a second end of the cylinder. The cylinder can be inserted into a first hole positioned in a first substrate by counterclockwise rotation. The first section of the cylinder abuts a first face of the first substrate and the second end of the cylinder is accessible from a second face of the first substrate. A channel, which is internally threaded, extends into the cylinder from the second end. A threaded fastener, which is engaged to a second substrate, can be inserted by clockwise rotation into the channel to engage the second substrate to the second face of the first substrate.

An improved fastener comprising a fastener body orientated about a central axis and having a tool-engaging portion, a threaded fastening portion and a shroud-receiving portion; a shroud concentrically mounted in the shroud-receiving portion to rotate relative to the fastener body under an applied external torque and having an outwardly extending annular shoulder; the shroud-receiving portion comprising an inwardly deformed stop radially overlapping the outwardly extending annular shoulder of the shroud; and the deformed stop of the shroud-receiving portion and the annular shoulder of the shroud forming a shroud-retaining element restraining the shroud from movement in at least a first axial direction along the central axis.