US Patent 7226101 Adjustable boss

An adjustable boss for securing an article carrier or rack assembly to a vehicle outer surface is disclosed. The adjustable boss is disposed between the rack assembly and the vehicle outer surface is employed having a body including an upper surface and a lower surface. A first protrusion extends away from the lower surface. A second protrusion extending away from the upper surface. The protrusions define an aperture whereby the first protrusion engages the vehicle outer surface.