Patent ID: 7819614

Claim:
A nail comprising: a head; a penetrating tip; a shank extending from the head to the penetrating tip and having a circumference and a longitudinal axis; and a plurality of rows of deformations in the shank extending outwardly of the shank, the rows formed in a spiral pattern along the length of the shank from about the head to about the penetrating tip, the rows of deformations being formed parallel to one another and formed at an angle of at least 50 degrees, as measured along a lead angle defined at a base of the deformation and the shank, relative to a cross-sectional plane perpendicular to a longitudinal axis of the nail, the deformations in each row being substantially contiguous with adjacent deformations in the same row, each of the deformations defining an outline shape where it is joined to the shank, that shape including at least a portion that is tapered along the spiral in a direction of the penetrating tip.