A blind nut assembly including a bush and nut. The bush includes a short cylindrical collar, which has a polygonal outer surface on the outer surface thereof, and a flange, the outer surface of which is polygonal. The nut consists of a female screw member, on which a female screw to be mated with a male screw on a bolt is formed; and a nut cylindrical member, which is formed adjacent to the female screw member, which has a polygonal inner surface on the inner surface thereof aligning with the polygonal outer surface of the collar, of which the outer surface is also a polygonal outer surface, and which has a wall thickness that is thinner than the female screw member. The nut head has an outer diameter which is larger than the maximum outer diameter of the nut cylindrical member, is formed above the nut cylindrical member.

A wheel hub unit having a central hub and a single central nut that includes respective shaped profiles radially oriented facing towards an axis (A) is provided. The wheel hub unit further includes an anti-unscrewing element interposed between the central hub and the single central nut to prevent accidental unscrewing of the single central nut. The anti-unscrewing element is provided with respective shaped profiles both radially oriented facing away from the axis (A) to engage with shaped profiles.

A locknut assembly for securing a component to a shaft is provided that includes, in one form, a locknut defining an internal cavity and an aperture having internal threads, the internal cavity defining an internal wall comprising at least one location feature. A lockwasher defines an internal cavity, an external wall comprising at least one mating location feature, and an anti-rotation feature disposed within the internal cavity and adapted for engagement with a corresponding anti-rotation feature located at an end portion of the shaft. The internal threads of the locknut aperture engage continuous external threads of the shaft, the mating location feature of the lockwasher engages the location feature of the locknut, and the anti-rotation feature of the lockwasher engages the corresponding anti-rotation feature of the shaft to limit rotation of the locknut.

A locknut assembly for securing a component to a shaft is provided that includes, in one form, a locknut defining an internal cavity and an aperture having internal threads, the internal cavity defining an internal wall comprising at least one location feature. A lockwasher defines an internal cavity, an external wall comprising at least one mating location feature, and an anti-rotation feature disposed within the internal cavity and adapted for engagement with a corresponding anti-rotation feature located at an end portion of the shaft. The internal threads of the locknut aperture engage continuous external threads of the shaft, the mating location feature of the lockwasher engages the location feature of the locknut, and the anti-rotation feature of the lockwasher engages the corresponding anti-rotation feature of the shaft to limit rotation of the locknut.