A breakaway nut includes a threaded section; a hex portion; and a breakaway portion connecting the threaded section and the hex portion, wherein a slot is defined in the hex portion along an axial dimension of the hex portion.

A breakaway threaded fastener is provided that includes a hollow stud, a pin, and a cap. The stud has a hollow cavity, a closed end, an open end with an upper surface, a wall, and an outer surface, which includes an external thread. The pin is in the hollow cavity with a first end at the closed end of the hollow stud and a second end proximate the open end of the hollow stud. The cap has another hollow cavity with a closed end, an open end, an inner surface, and an internal thread. The cap is threadably engaged to the open end of the hollow stud via the internal and external threads so that the second end of the pin abuts the inner surface of the cap with a gap remaining between the upper surface of the hollow stud and the inner surface of the cap.

A fastener for connecting an electrical conductor to a connector body includes a first portion adapted to engage an opening of the connector body and a second portion engaging the first portion. The second portion includes a head, a base coupled to the first portion and including an end adapted to engage the electrical conductor, and a shearable section positioned between the head and the base.

A flap support mounting assembly employs a flap support having at least one laterally-oriented upper coupling and a pair of laterally-oriented lower couplings. A fail-safe pin engages the at least one laterally-oriented upper coupling to an upper rear-spar fitting. A pair of frangible pins engages the lower couplings to a pair of lower rear-spar fittings. The frangible pins are configured to shear and enable the flap support to rotate upwards about the fail-safe pin in response to a load induced on the flap support that creates a moment inducing a sufficient shear force to shear the frangible pins. The fail-safe pin is configured to shear allowing separation of the flap support and associated flap from the wing in a manner that inhibits damage to a rear spar and integral fuel tank in a wing structure.

Range taking shear bolts and bolt installation (drive) tools are described herein, which are configured for use with a variety of range taking connectors and conductors.

A torque limiting hex head bolt with a cap overmolded on the hex head. The cap surrounds the hex head with a surrounding lip underlying a hex head surface facing the bolt distal end. First and second cap hex heads are aligned about the bolt axis on its proximal end with a weakened portion between the cap hex heads whereby the first cap hex head breaks from the cap when an excess torque is applied to the first cap hex head. A spacer extends axially in the distal direction from the hex head surface facing the distal end, and has an axial dimension at least equal to the axial dimension of the cap surrounding lip. A flange extends radially outwardly from the torque limiting cap, wherein the flange and the cap weakened portion are between the first and second cap hex heads.

A shear nut 10, a lock nut 62 (together forming a nut arrangement 60 for a bolt 12), and a driver (110, 500, 600, 700) used while installing the nut arrangement 60. Particularly, the bolt 12 is a rock bolt. The shear nut 10 comprises first and second portions (14, 18) connected by a connecting portion 22. The second portion 18 comprises an engaging formation 20 configured to interact with the bolt 12 to limit the extent to which the second portion 18 operatively advances axially along the bolt 12. The first portion 14 has an internal thread. In use, the first and second portions (14, 18) are configured to become separated at the connecting portion 22, when the engaging formation 20 interacts with the bolt 12 and a predetermined moment is applied to the first portion 14.

A foreign material exclusion plug is disclosed. The foreign material plug includes a cylindrical body, a slot, and a breakaway tab. The cylindrical body includes an externally-threaded cylindrical structure. The slot is formed in the cylindrical body extending into the cylindrical body from a top surface of the cylindrical body. The breakaway tab is connected to the cylindrical body and extends outwards from the top surface.

A foreign material exclusion plug is disclosed. The foreign material plug includes a cylindrical body, a slot, and a breakaway tab. The cylindrical body includes an externally-threaded cylindrical structure. The slot is formed in the cylindrical body extending into the cylindrical body from a top surface of the cylindrical body. The breakaway tab is connected to the cylindrical body and extends outwards from the top surface.

A rebar anchoring system and method are provided. The system includes: a rebar, with an external thread formed on the periphery of at least one end; an anchoring head, with a first perforation and a second perforation disposed respectively at both ends extending axially into the anchoring head and communicating with each other, the inner sides of the first and second perforations being formed respectively with a first internal thread matching with the external thread of the rebar and a second internal thread, and the anchoring head being mounted on the end of the rebar through the first internal thread and the external thread of the rebar; and a bolt, having a screw rod matching with the second internal thread, the screw rod being locked into the second perforation of the anchoring head, and the end of the screw rod pressing against the end of the rebar.