KS B 0551-1996 Mechanical properties of fasteners Part 7 : Torsional test and minimum fracture torques for bolts and screws with nominal diameters 1 mm to 10 mm
This standard has a strength classification of 8.8 to 12.9 according to ISO 898-1 and a nominal diameter of 1 to 10 m.
KS B 0551-1996 history
2020KS B 0551-2020 Mechnical properties of fasteners — Part 7: Torsional test and minimum fracture torques for bolts and screws with nominal diameters 1 mm to 10 mm
2015KS B 0551-2015 Mechnical properties of fasteners — Part 7: Torsional test and minimum fracture torques for bolts and screws with nominal diameters 1 mm to 10 mm
1996KS B 0551-1996 Mechanical properties of fasteners Part 7 : Torsional test and minimum fracture torques for bolts and screws with nominal diameters 1 mm to 10 mm