A bushing includes a base portion having a central axis, a substantially circular aperture extending through the base portion along the central axis, and a plurality of tapered fingers integral with and protruding from the base portion. Each of the tapered fingers are configured to deflect from a first position in which a bolt or similar fastener may pass through the bushing to a second position in which the bushing constricts or clamps down around the bolt. A coupling system and method for rigidly securing two or more components together using one or more bushings is also provided.