鋼結構栓連接用高強度大六角螺母          
          High-Strength Hexagon Nuts with Large Widths Across Flats for Structural Steel Bolting 
                      
          鋼結構栓連接用高強度大六角螺母          
          High-strength Hexagon Nuts with Large Widths Across Flats for Structural Steel Bolting 
                      
          預負載用高強度結構螺栓連接副,第4部分:HV系統 - 六角螺母          
          High-strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon nuts