A wood nail includes an elongate shank having converging surfaces at one end thereof to form a cutting edge suitable for being driven into wood. A slotted head is provided at the other end of the shank. An anchoring portion is provided in the region of the cutting edge, the anchoring portion projecting laterally of the shank in a direction substantially normal to the axial length of the latter to form an anchoring shoulder with the major portion of the shank. The shoulder faces in the direction of the head. The anchoring portion has a transverse dimension greater than the axial dimension thereof and has a cutting surface facing the direction of rotation when the nail is turned about its axis. With this construction, the cutting surface is made sufficiently small to facilitate turning of the nail after being driven into the wood by engagement of the slotted head with a suitable tool and the shoulder is made sufficiently large to assure good anchoring of the nail in the driven position after being turned angularly about the axis thereof from the initial driven position due to engagement of the shoulder with the wood.
The end of the nail guide and deflector tube of an anchor nail fastener is flattened to form a chisel point. The chisel point is oriented with respect to the nail exit side aperture of the tube to provide the most effective relationship between the laterally projecting anchor nail and the hole in the workpiece made by the tube.
