A fastener retaining component may comprise a first elongated member. A length of the first elongated member may be greater than a diameter of a fastener receiving element of a component. The fastener retaining component may further comprise a second elongated member. A length of the second elongated member may be greater than the diameter of the fastener receiving element. The fastener retaining component may be configured to be press-fit within the fastener receiving element such that press-fitting the fastener retaining component, within the fastener receiving element, increases a tension in the fastener retaining component to cause the first elongated member and the second elongated member to engage with an inner surface of the fastener receiving element and to retain a fastener within the fastener receiving element.

A fastener assembly includes a threaded member including a threaded body portion and a head portion. The fastener assembly also includes a first lock member including a plurality of axially-extending ratchet teeth and defining an aperture extending therethrough. The aperture is sized to receive the threaded body portion. The fastener assembly further includes a second lock member including a base portion configured to couple to the threaded member for rotation therewith and at least one spring finger extending axially from the base portion. The at least one spring finger has a proximal end joined to the base portion and a free end opposite the proximal end. The second lock member has a lock position in which the free end of the at least one spring finger is configured to engage the plurality of axially-extending ratchet teeth and an unlock position in which the free end of the at least one spring finger is spaced from the plurality of axially-extending ratchet teeth.

In accordance with one or more embodiments of the invention, nut restrainers, centering tools, and methods of use are presented, particularly as applied to high strength bolted connections. Nut restrainers may have an interior profile including a circular profile section and a regular hexagonal profile section, a nut inserted into the nut restrainer may have lateral freedom of movement, and the nut restrainer may have a top plane with one or more centering protrusions. A centering tool for positioning a nut restrainer may have a non-circular head section, a cylindrical positioning section, a threaded section, and a cylindrical restrainer positioning section; a method of positioning a nut restrainer coaxial with a bolt hole using the centering tool.

A fastener assembly includes a threaded member including a threaded body portion and a head portion. The fastener assembly also includes a first lock member including a plurality of axially-extending ratchet teeth and defining an aperture extending therethrough. The aperture is sized to receive the threaded body portion. The fastener assembly further includes a second lock member including a base portion configured to couple to the threaded member for rotation therewith and at least one spring finger extending axially from the base portion. The at least one spring finger has a proximal end joined to the base portion and a free end opposite the proximal end. The second lock member has a lock position in which the free end of the at least one spring finger is configured to engage the plurality of axially-extending ratchet teeth and an unlock position in which the free end of the at least one spring finger is spaced from the plurality of axially-extending ratchet teeth.

A connector mounting structure for mounting a connector (10) including a connector housing (20) made of synthetic resin on a case (50) made of metal by a bolt (80) includes a tubular metal member (55), the bolt (80) being inserted through the metal member, the metal member being configured to contact a seating surface (83) of a head portion (81) of the bolt (80) with the bolt (80) tightened. The connector housing (20) is integrally provided with a mounting piece (30) with an insertion hole (37) through which the bolt (80) and the metal member (55) are to be inserted.

A connector mounting structure for mounting a connector (10) including a connector housing (20) made of synthetic resin on a case (50) made of metal by a bolt (80) includes a tubular metal member (55), the bolt (80) being inserted through the metal member, the metal member being configured to contact a seating surface (83) of a head portion (81) of the bolt (80) with the bolt (80) tightened. The connector housing (20) is integrally provided with a mounting piece (30) with an insertion hole (37) through which the bolt (80) and the metal member (55) are to be inserted.

A metal fastener is provided having a first threaded screw portion for engaging a complementary threaded portion of a bore of a metal member at a first temperature, and a sealing portion disposed proximal a distal end of the first screw portion, the sealing portion having a greater coefficient of thermal expansion than the metal member, wherein the sealing portion is configured to thermally expand and provide a seal between the sealing portion and an inner circumference of the bore at a second temperature higher than the first temperature, such that the first screw portion of the fastener is immobile relative to the bore at the second temperature.

A metal fastener is provided having a first threaded screw portion for engaging a complementary threaded portion of a bore of a metal member at a first temperature, and a sealing portion disposed proximal a distal end of the first screw portion, the sealing portion having a greater coefficient of thermal expansion than the metal member, wherein the sealing portion is configured to thermally expand and provide a seal between the sealing portion and an inner circumference of the bore at a second temperature higher than the first temperature, such that the first screw portion of the fastener is immobile relative to the bore at the second temperature.

According to the present disclosure, a method for securing a threaded fastener in a threaded hole includes directly applying a locking compound to at least a portion of threads to be mated on either the threaded fastener or the threaded hole. The locking compound includes a substantially pure, non-chromated aluminum pigmented compound suspended in a water-based inorganic binder with temperature resistance in excess of 900 degrees Fahrenheit (about 482 degrees Celsius). The threaded fastener is threaded into the threaded hole after applying the locking compound on the threads to be mated.

According to the present disclosure, a method for securing a threaded fastener in a threaded hole includes directly applying a locking compound to at least a portion of threads to be mated on either the threaded fastener or the threaded hole. The locking compound includes a substantially pure, non-chromated aluminum pigmented compound suspended in a water-based inorganic binder with temperature resistance in excess of 900 degrees Fahrenheit (about 482 degrees Celsius). The threaded fastener is threaded into the threaded hole after applying the locking compound on the threads to be mated.