Art collection of nail, spike or tack fasteners designed to be driven by repeated blows or by nailing machines and laterally displacing materials into which they are forced to thereby be retained either by friction, clenching, or additionally locking means wherein a nail, spike or tack fastener is provided with two or more prongs and further wherein the prongs of fastener are designed to enter material at or near the same point and to be distinquished from staples in that they are not adapted to span and secure between two of holding points and a separate piece of material.
