| 摘要 |
FIELD: manufacture of fastening articles, possibly for building, machine engineering and other metallic structures. SUBSTANCE: rivet includes at least in one cross section of its rod line of cross section boundary. At least a part of length of cross section boundary is in the form of fragment or combination of fragments of oblique section of straight circular cone. EFFECT: constructionally caused directivity of strength properties, enhanced efficiency of fixation and easy identification of rivet manufacturer. 14 cl, 13 dwg |
