Abstract: A threaded coupling is provided that comprises a first coupling member, comprising a cylindrical portion which is internally threaded around an axis of rotational symmetry of the cylindrical portion and comprises an open end that defines an opening having an annular rim; a second coupling member comprising an externally threaded portion and at least one key cavity; and a locking assembly. The locking assembly comprises a lock pin and a lock nut. The externally threaded portion is arranged to be received through the opening to be threadedly engaged with the internally threaded cylindrical portion to couple the first coupling member to the second coupling member. The rim comprises at least one projection that projects in a generally axial direction parallel to the axis of rotational symmetry of the cylindrical portion.

Abstract: Anti-rotation keys are typically used in applications where an end of a threaded stud is received in a housing, and where the opposite end of the stud projects from the housing to allow attachment of another component to the housing. Once partially received in the housing, further rotation of the stud is prevented by an anti-rotation key. The disclosed anti-rotation key is self-retaining, in that it prevents itself from “backing out” of the channel due to vibration or thermal expansion of the housing, etc., while also being removable from the channel if desired.

Abstract: A connector includes an elongated hollow body and a nut threaded onto the body. The nut is secured in place by outward expansion of material from the threaded body into a chamfer of the nut.

Abstract: A locking fastener assembly comprising a nut and a washer. The nut and washer each have opposed load bearing surfaces which include a series of annularly extending, slightly inclined faces forming shallow undulations around each surface. The load bearing surface on the nut is generally spherically convex and the load bearing surface on the washer is generally spherically concave. The nut rotates as it is installed while the washer is prevented from rotating so that the undulating bearing surface on the nut slides over the undulating bearing surface on the washer against ever increasing resistance until the assembly is properly seated and the nut is effectively prevented from counter-rotating by interference between opposed, inclined faces. A concave clamping surface is formed on the outer end of the washer on a radially extending flange. The flange flexes when the assembly is installed and resiliently urges the washer against the nut.

Abstract: Screw (10), bolt or locking ring bolt (20), each exclusively produced by rolling as well as a method of production of such a screw (10), such a bolt or such a locking ring bolt (20).

Abstract: A compressibly resilient strip is retainably disposed in an axial slot in a threaded shank which is advanced through a bore in a plurality of workpieces. A rigid retainer member is inserted into the slot to urge the resilient strip against the bore to increase the resistance force between bolt and bore against separation until such time as the retainer member is removed.In another application of the invention, a threaded fastener having a head and a shank is inserted into a through opening in workpieces until the end protrudes and is fastened with a nut. An axial slot in the threaded fastener is aligned with an axial channel of the nut. A strip, having a protruding lug near its distal end, is passed through the slot of the threaded fastener until the protruding lug enters the channel of the threaded nut. The portion of the strip extending beyond the head of the threaded fastener is bent into a groove in the surface of the head of the threaded fastener, preventing accidental disassembly of fastener and nut.

Abstract: A retainer for preventing rotation of a spindle nut relative to a wheel spindle. The retainer engages a key way of the spindle and a groove of the spindle nut to prevent rotation of the spindle nut relative to the spindle. The retainer has a semi-circular body that surrounds the end of the spindle. The retainer has a radially inward projecting tab and an axially extending leg from the tab that engages the key way. The leg in addition to engaging the key way engages the groove of the spindle nut. The spindle nut preferably includes a recess in which the body portion of the retainer is nested.

Abstract: A non-expandible anchor for use in tensile zones of strong material having a compressive strength of at least 20 N/mm.sup.2 includes a cutting portion having a deep, coarse, raised, external helix formed with a cutting edge and having interruptions along the helix which act as chip breakers and permit removal of debris during insertion in a pre-prepared bore drilled in the strong material.

Abstract: A lock assembly for securing nuts to rotatably driven shafts in which a generally U-shaped locking spring is mounted with one leg thereof disposed along an opening in the rotatably drive shaft or a component keyed to the shaft and the other leg thereof disposed through and beyond a hole in the nut with a tab portion of such leg extending perpendicularly of the hole so that the tab will be urged outwardly of the hole by centrifugal force as the drive shaft is rotated to thereby create a more secure engagement of the locking spring with the nut.

Abstract: A fastening apparatus is adapted to be inserted and removed from one side of a work piece having an opposite side which is substantially inaccessible to a worker. A first, externally threaded member is threadingly engaged with a receiving structure, and a second member is inserted within corresponding seats or grooves for interlocking the two members. In the preferred embodiment diverting seats are provided for forming the second member into locking engagement between the receiving structure and the first member. In one embodiment, seat structures are provided for engaging frangible panels or the like for high temperature applications.

Abstract: A bearing lockout assembly having a locking cup piece which maintains locking keys in retentive association in counterbores of a lockout is disclosed. The locking cup piece is keyed on its inner diameter to a shaft and provided on the edge of its outer diameter with means to coact with the locking keys to define a vernier self locking feature.

Abstract: An adjustable pulley construction including a first disc having a belt-engaging surface and a centrally located, internally threaded annular hub, the hub having an exterior flat face and an interior recess; and a second disc having a belt-engaging surface and a centrally located annular externally threaded axle, the annular hub of the first disc being coaxially with and movable relative to the axle. The belt-engaging surfaces are positioned in facing relationship to receive a pulley belt therebetween. Securing elements for maintaining a desired space relation between the discs, the securing elements include: a threaded bore disposed in the hub transverse to the axle, a set screw received in the bore, a longitudinal keyway in the hub communicating with the bore, a keyway land provided on the axle in line with the set screw, and a generally H-shaped key. The key is positioned within the recess in the hub and engaged by the set screw to provide a frictional clamping action of the key onto the keyway land.

Abstract: A locking fastener assembly has a fastener with a generally cylindrical body with external threads for assembly with a hollow outer member. Crenellations are provided at a first end of the body for engaging an inner member in the hollow member for preventing rotation of the inner member relative to the locking fastener. At the other end of the body there is a radially extending flange carrying an interrupted annular rim which defines an annular channel between the body and the rim. A locking ring can fit substantially entirely into the annular channel. The ring has a plurality of projections which fit into a plurality of radial slots in the rim for preventing relative rotation between the locking ring and fastener. A snap ring or the like can be used for releasably spacing the locking ring away from the bottom of the annular channel so that the projections on the ring can engage projections on the outer member and prevent relative rotation between the outer member and the split ring.

Abstract: A pin lock for a turnbuckle of an ajdustable link on a three-point hitch. The pin locks the threads of the turnbuckle and is retained in the locking position by a retainer ring.