Patent ID: 7097403

Claim:
A nail comprising: a) an elongated metal shank having a point at one end, said shank having a cross-sectional shape with a predetermined periphery that is bisected by a straight parting line in two spaced locations on said shank periphery, said parting line intersecting no voids within said shank and defining a pair of opposed side portions of said shank, said parting line being defined as the cross-section of the shank where two opposing dies meet in the formation of the shank; b) said predetermined periphery including at least two spaced fin-like protuberances on at least a first of said opposed side portions protruding at approximately right angles to said parting line, each said protuberance having a substantially straight side on any side facing an adjacent said protuberance on said first side portion of said shank; and c) an intervening valley disposed between adjacent said at least two protuberances on said first side portion and curved inwardly toward and terminating short of said parting line.