China 10.9 Sets of Torshear Type High Strength Bolt Hexagon Nut and Plain Washer for Steel Structures, Find details about China 10.9 Torsional Shear Type High Strength Bolts, 10.9s Grade Bolt Sets from 10.9 Sets of Torshear Type High Strength Bolt Hexagon Nut and Plain Washer for Steel Structures