Abstract: A fastener assembly comprises a beveled flush nut shaped to fit flush to a surface of the first piece within a countersunk portion of a hole, a threaded rod sized to engage the beveled flush nut and to extend through the hole in the first piece and an aligned hole in the second piece. A first nut is sized to threadedly engage the distal end of the threaded rod. A second nut is sized to threadedly engage the proximal end of the threaded rod when extended through an aligned opening in a third piece positioned over the second piece. The threaded engagement at the beveled flush nut can be overcome by tightening the second nut against the third piece, thereby securing the first piece, second piece and third piece together.