NAIL Russian patent published in 1999 - IPC

FIELD: manufacture of fastening articles, for example by rolling, forging, drawing, working, extrusion or powder metallurgy, possibly at assembling building structures, mainly wooden ones. SUBSTANCE: nail has at least in one of cross sections of its rod boundary line of section. At least part of length of said boundary line is in the form of fragment or combination of fragments of oblique cone section of straight circular cone. EFFECT: possibility of making nail with constructionally caused directivity of strength properties at operation, enhanced efficiency of fixation due to increased lateral surface of nail rod, easy identification of nail manufacturer due to realization of constructional identification of nail at process of making it. 14 cl, 13 dwg