A lock tab washer, a pipe hanger, and a method of assembling a pipe hanger are disclosed. The lock tab washer can comprise a washer body, the washer body defining a first side and a second side opposite the first side, the washer body defining a hole therethrough; an edge tab extending from the first side of the washer body, the edge tab define a first section and a second section, the second section bent relative to the first section; a nut tab extending from the second side of the washer body, the nut tab bent relative to the washer body; and a wing extending from the nut tab, the wing bent relative to the nut tab.

A lock nut and tang washer mechanism preloads and locks components in a rotating environment. A drive system mechanism preloads and locks the device in a rotating environment and provides a double locking safety requirement needed in most aircraft for applications operating in an enclosed environment. The mechanism holds a required torque for the duration of the drive system operating life without the need for periodic visual inspections.

A locking device (11), e.g. a lock washer, for use with a screw threaded fastener (71), said locking device comprising at least a first disc-like body (12) comprising an annular portion (13) with at least one aperture (15) therein and a central through-hole (14) e.g. a washer having notches (15) open to the outer periphery and at least one further body (25) held in said one aperture (15). The further body may be shim (22) also having a central hole (24) and at least one tab (25) which extends through the notch (15) and has an end portion which juts above adjacent surface of the washer to engage an adjacent surface on the fastener when compressed, on tightening of the fastener deflects within the void of the aperture in which it is located under the influence of the tightening of the engaging surface such that under any tendency to loosen, the tab jams against the opposing surfaces and resist loosening of the fastener.

A lock washer for preventing relative rotation between an inner component and an outer component in an aircraft engine. The lock washer comprises an annular body having an inner circumferential surface and an outer circumferential surface radially spaced apart to define a radial thickness of the annular body. Radially-inward protruding tabs extend radially inwardly from the inner circumferential surface of the annular body and are operable for engagement with slots in the inner component. Radially-outward protruding tabs extend radially outwardly from the outer circumferential surface of the annular body and are operable for engagement with slots in the outer component. The radially-outward protruding tabs are circumferentially offset from the radially-inward protruding tabs such that the radially-outward protruding tabs and the radially-inward protruding tabs are all free of circumferential overlap.

The invention relates to a locking device (300) comprising: a shaft (24) comprising a first thread (22); and a nut (12) and a ring (13) to be assembled on the shaft; the nut comprising a first inner thread (18) defining a first radial clearance with the first thread of the shaft; the nut further comprising a second inner thread (20) in the opposite direction to the first inner thread, the ring (13) comprising a second thread (40) defining a second radial clearance with the second inner thread of the nut; the ring comprising a third inner thread (38) defining a third radial clearance with the first thread of the shaft. The inner threads and the first and second threads have an identical and constant thread pitch; and each of the second and third radial clearances is greater than the first radial clearance.

A lock nut and tang washer mechanism preloads and locks components in a rotating environment. A drive system mechanism preloads and locks the device in a rotating environment and provides a double locking safety requirement needed in most aircraft for applications operating in an enclosed environment. The mechanism holds a required torque for the duration of the drive system operating life without the need for periodic visual inspections.

An assembly comprising: a nut having a cylindrical body with a threaded external surface, an axially extending interior tool socket, and a radially outwardly extending flange at a proximal end of the cylindrical body; a first component including a hollow cylindrical tube with a connector end having a radially inwardly extending shoulder, the radially inwardly extending shoulder abutting the radially outwardly extending flange of the nut in an assembled position; and a second component including an annular hub with a threaded internal surface matching the threaded external surface of the nut, and an annular mounting surface abutting the connector end of the propeller shaft in the assembled position.

A fastener assembly includes a first lock member including a plurality of radially extending ratchet teeth and a second lock member including a base portion and at least one tab extending axially from the base portion. The at least one tab has a proximal end joined to the base portion and a free end opposite the proximal end. The second lock member further includes a plurality of radially extending teeth on an inner side of the free end of the at least one tab. The second lock member is positionable between a locked configuration in which the plurality of radially extending teeth are configured to engage the plurality of radially extending ratchet teeth and an unlocked configuration in which the plurality of radially extending teeth are spaced from the plurality of radially extending ratchet teeth. The base portion and the at least one tab are a single piece.

Adjustable and rebuildable ball joint assemblies are disclosed. Methods for installation, adjustment, and rebuilding ball joint assemblies are described. In some embodiments, the ball joint assembly includes a washer with tabs to restrain rotation of the cap relative to the housing. In some embodiments, the ball joint assembly includes a locking mechanism to restrain rotation of the bearing relative to the housing.

A method of assembling a pipe hanger includes inserting a threaded rod through a suspension member; placing a lock tab washer on the threaded rod, the lock tab washer defining an edge tab, a nut tab, and a wing extending from the nut tab; threading a nut on the threaded rod, the nut defining a circumferential side defining a first face and a second face, the lock tab washer oriented between the suspension member and the nut; folding the edge tab over a side edge of the suspension member; folding the nut tab over the first face of the circumferential side of the nut; and folding the wing over the second face of the circumferential side of the nut.