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.

A motor adapter assembly can couple a motor shaft for a ceiling fan motor to a downrod. The motor adapter assembly can include a base plate, a cradle with arms extending through the base plate, and a threaded bushing secured between the arms of the cradle. Threading a cap to the threaded bushing can be used to pivot the downrod between an upright position and a pivoted position.

A track link and track shoe bolted connection includes a track link with a clearance hole, a track bolt with a free end extending through the clearance hole, and a track nut with a top surface that is spaced away a minimum distance from the clearance hole. The track link includes a rail surface, a bottom surface, and a midplane between the rail surface and the bottom surface. The top surface of the track nut is at or above the midplane.

A fastener having a cylindrical shank with a fastener head attached to the first shank end, the head having a tool slot for engaging a tool, the tool slot directed away from the first shank end and a lower head surface adjacent the shaft. The cylindrical shank has a head collar adjacent the head, a threaded collar having securing threads, the threaded collar disposed along a portion of the second shank end, a shank smooth portion disposed between head collar and the threaded collar and a grip washer disposed along the collar. The grip washer has a first washer side with a plurality of protrusions and a second washer side having a profile corresponding with the lower head surface, wherein the grip washer is rotatable about the collar and the lower head surface. The fastener includes a retractable frame rotatable about the shank smooth portion.

A fastener having a cylindrical shank with a fastener head attached to the first shank end, the head having a tool slot for engaging a tool, the tool slot directed away from the first shank end and a lower head surface adjacent the shaft. The cylindrical shank has a head collar adjacent the head, a threaded collar having securing threads, the threaded collar disposed along a portion of the second shank end, a shank smooth portion disposed between head collar and the threaded collar and a grip washer disposed along the collar. The grip washer has a first washer side with a plurality of protrusions and a second washer side having a profile corresponding with the lower head surface, wherein the grip washer is rotatable about the collar and the lower head surface. The fastener includes a retractable frame rotatable about the shank smooth portion.

A nut-and-bolt fastener is provided. The nut and bolt are configured with a plurality of interlocking teeth that provide unidirectional travel of the nut with respect to the bolt. In particular, the configuration of the teeth arrest separation of the nut from the bolt while permitting the nut to move toward the head of the bolt into a fastened engagement. The teeth are non-helical and arranged concentrically around the longitudinal axis in evenly-spaced steps or segments along the longitudinal axis and around the shaft of the bolt and bore of the nut. Integral winged washers are provided on the bolt head as well as on the nut. Variations with different rake angles of the teeth as well as an expandable nut are also provided.

A solar panel attachment assembly including a purlin bent into a U-shaped channel with a mounting wall, an upright wall and a cross piece attached to the upper edge. A solar panel having a frame with a lower horizontal wall forming a mounting surface and a vertical wall forming an outer surface. An inwardly directed channel formed on the upper edge of the vertical wall surrounds and fixedly engages the edges of solar sensors. Attachment bolts with a portion of the body being threaded and a tip portion of the body having a drill bit formed therein. The drill bit has an outer diameter smaller than an outer diameter of the bolt threads, and the attachment bolts are positioned to extend through the cross piece of the purlin and through the lower horizontal wall of the cross-section to hold the solar panel in abutting engagement with the purlin.

A nut restrainer includes a mobile portion; and a fixed portion. The mobile portion may include at least one cavity configured to accept insertion of a nut and prevent rotation of the nut with respect to the mobile portion.

A nut restrainer includes a mobile portion; and a fixed portion. The mobile portion may include at least one cavity configured to accept insertion of a nut and prevent rotation of the nut with respect to the mobile portion.

A bolt for joining a first component and a second component, the bolt being capable of correcting a position of the second component with respect to the first component is provided. A bolt is fitted in a first hole of a first component and in a second hole of a second component in order to join the first component and the second component. The bolt includes a flange part, a threaded part, a head part, and a centering part. The centering part has a centering part body, and a plurality of blades. Each blade has an external-diameter increase portion in which a distance from the axis to an outer edge gradually increases toward a direction opposite to a tightening rotation direction of the bolt, and a distance from the axis to the outer edge gradually increases along an axial direction toward the flange part.