2型全金属六角锁紧螺母          
          Prevailing Torque Type All-Metal Hexagon Nuts,Style 2 
                      
          2型 全金属六角锁紧螺母          
          Prevailing Torque Type All-metal Hexagon Nuts, Style 2 
                      
          2型全金属六角锁紧螺母  5、8、10和12级          
          Prevailing Torque Type All-metal Hexagon Nuts, Style 2 - Property Classes 5, 8, 10, and 12