Abstract: Shims with slots sized and configured to receive fasteners having different dimensions, and methods of using the shims. Such a shim includes a base region and leg portions that extend from the base region, are spaced apart from each other, are laterally separated by a longitudinal axis of the shim, and define a slot therebetween. The slot is defined by longitudinally extending side edges, inner tapered edges that are contiguous with the side edges, and an arcuate inner edge that connects and is contiguous with each of the inner tapered edges. The side edges, inner tapered edges, the arcuate inner edge define a continuous edge that surrounds and defines the slot and is defined by the base region and the leg portions. The slot has a decreasing width between the inner tapered edges in a direction along the longitudinal axis toward the arcuate inner edge.