UNE-EN 20898-7:1996 MECHANICAL PROPERTIES OF FASTENERS. PART 7: TORSIONAL TEST AND MINIMUN TORQUES FOR BOLTS AND SCREWS WITH NOMINAL DIAMETERS 1 MM TO 10 MM. (ISO 898-7:1992).
1996UNE-EN 20898-7:1996 MECHANICAL PROPERTIES OF FASTENERS. PART 7: TORSIONAL TEST AND MINIMUN TORQUES FOR BOLTS AND SCREWS WITH NOMINAL DIAMETERS 1 MM TO 10 MM. (ISO 898-7:1992).