Abstract: A vehicle axle is provided with a main body defined by the combination of a channel having an inverted U-shaped configuration and a bottom plate. The ends of the main body are curved upwardly to define a pair of gooseneck portions. Axle head sections are formed at the ends of the axle and are closed off by end extensions extending from the front and rear walls of the channel and a cover flap extension extending from the top wall of the channel. A head plate having a rounded back edge and/or a pocket is inserted within the space between the cover flap and the top edges of the end extensions.

Abstract: A vehicle axle is provided with a main body defined by the combination of a channel having an inverted U-shaped configuration and a bottom plate. The ends of the main body are curved upwardly to define a pair of gooseneck portions. Axle head sections are formed at the ends of the axle and are closed off by end extensions extending from the front and rear walls of the channel and a cover flap extension extending from the top wall of the channel. A head plate having a rounded back edge and/or a pocket is inserted within the space between the cover flap and the top edges of the end extensions.

Abstract: A threaded fastener includes a shank having a tip and a head configured for engagement by an associated driving tool. The fastener is configured for use with an associated threaded opening. The head is disposed on the shank opposite the tip. The shank has a helical thread formed thereon. The thread extends from about the tip to about the head and defines a plurality of zones. Each zone has a plurality of individual threads extending 360 degrees about the shank. A leading thread in each zone is formed with a wave-form profile having an amplitude that is greater than the amplitude of each prior leading thread. In one embodiment, threads other than the leading thread in each zone do not have an amplitude as great as their respective leading threads. A fastening assembly is also disclosed.

Abstract: A threaded fastener includes a shank having a tip and a head configured for engagement by an associated driving tool. The fastener is configured for use with an associated threaded opening. The head is disposed on the shank opposite the tip. The shank has a helical thread formed thereon. The thread extends from about the tip to about the head and defines a plurality of zones. Each zone has a plurality of individual threads extending 360 degrees about the shank. A leading thread in each zone is formed with a wave-form profile having an amplitude that is greater than the amplitude of each prior leading thread. In one embodiment, threads other than the leading thread in each zone do not have an amplitude as great as their respective leading threads. A fastening assembly is also disclosed.