A threaded fastener pair, including: a first threaded fastener with a male threaded portion; and a second threaded fastener with a female threaded portion, the female portion being configured to receive the male threaded portion, wherein the first threaded fastener is formed with a shank having an outer diameter approximately equal to an outer diameter of the second threaded portion, the second threaded fastener has a length equal to or greater than that of the first threaded fastener and the length of the first threaded fastener is at least 45 mm.

A uniquely configured, hardened collar nut for use in the installation and retrofitting of light poles, and method of using same.

A quick action nut and a threaded fastener assembly including the quick action nut are proposed in the present invention. The quick action nut includes a nut housing, a control operating member, and at least two moving blocks movably connected inside the nut housing. A first through hole having a first hole axis is provided on the nut housing for a screw to pass through. Radial slide ways are provided on the nut housing for the moving blocks to move in a direction perpendicular to the first hole axis. The radial slide ways and the moving blocks have the same quantity, are matched in a one-to-one correspondence, and are distributed around the first hole axis. Threads are provided on the moving block to form or not form a threaded hole structure that is matched with the screw.

A fan clamp is provided for supporting a fan on a support surface by clamping to the support surface. The fan clamp includes a clamp assembly having an upper clamp member for engaging a top side of the support surface, a lower clamp member for engaging a bottom side of the support surface and a screw adjustment assembly extending through the lower and upper clamp members for clamping the upper clamp assembly and lower clamp assembly to the support surface. The clamp assembly further includes a shield extending from the lower clamp assembly through the upper clamp assembly that partially surrounds the screw adjustment assembly to block the screw adjustment assembly from being visible when the lower and upper clamp assemblies move away from each other to engage a support surface. The fan clamp may further include an arm extending from the clamp assembly for supporting the fan. The arm may be a swing arm that is rotativity connected to the fan clamp.

An assembly with an aircraft fuel tank is disclosed having a captive nut with an internal thread, a secondary structure, and a fastener which secures the secondary structure to the fuel tank. The fastener has a shaft which passes through the secondary structure and has an external thread coupled to the internal thread of the captive nut. The fuel tank has a fuel tank element with a hole, and the captive nut has a sleeve which is located in the hole with an interference fit between an outer surface of the sleeve and an inner surface of the wall of the hole.

A doubling-up fitting includes an expansion sleeve which has a sleeve base with a sleeve base opening and has at least one expansion tab which can be spread radially outward. An inner ring is axially displaceable in the expansion sleeve towards the sleeve base in a tightening direction in order to spread the at least one expansion tab radially outward. A threaded bolt with a screw thread and with a bolt head engages behind the inner ring in the tightening direction. A threaded part has a widened head and can be screwed to the screw thread of the threaded bolt. The opening diameter of the sleeve base opening and the clear opening diameter of the inner ring are each greater than the bolt diameter of the threaded bolt.

A hose connector 106 for a cartridge-operated fire extinguisher 100, the hose connector 106 including: a valve body connection tube 330 for connecting the hose connector 106 to a valve body of the fire extinguisher 100, the valve body connection tube 330 is non-threaded; a hose connection tube 332 for connecting a hose to the hose connector 106; and a fixing plate 334 for fixing the hose connector 106 to the valve body of the fire extinguisher 100.

A method of installing pre-molded seal caps onto fasteners that extend from a surface comprises sequentially delivering the pre-molded seal caps, arranged on a carrier strip, to a plunger mechanism via a feed system. The method also comprises sequentially removing the pre-molded seal caps from the carrier strip using the plunger mechanism, operating in concert with the feed system. The method further comprises individually installing the pre-molded seal caps onto selected ones of the fasteners using the plunger mechanism.

A captive shear bolt assembly includes a bolt and a shear coupling. The bolt may have a head, an extension, and a shank. The shear coupling may be configured to be received by the extension. The shear coupling may be configured to receive the extension via an orifice in the shear coupling. The shear coupling may be configured to shear when an upper head of the shear coupling is driven at a threshold torque. When the shear coupling has sheared, the extension may be configured to captively secure the upper head to the bolt. The captive shear bolt assembly may be used in a tap connector for electrically connecting a main conductor to a tap conductor.

A fastening system to couple a first aircraft structure and a second aircraft structure is disclosed. The fastening system includes a fastener, a nutplate having a body defining an opening to receive the fastener, a flange extending from the body to engage an outer surface of the first structure, and a first sleeve protruding from the flange in a direction away from the body, the first sleeve to couple to a first bore formed in the first structure and prevents rotation of the nutplate relative to the first structure.