Labels:text | screenshot | diagram | number OCR: Mark Class Mark Class Hexagon 4- 4T Stud bolt head bolt 5- 5T Bolt 6- 6T head No. 7- 7T 4 No mark 8- 8T 9- 9T 4T 10- 101 11- 11T No mark 4T Hexagon flange bolt w/ washer No mark 4T Grooved hexagon bolt 6T Hexagon head bolt Two protruding 5T lines Hexagon flange bolt Two w/ washer protruding 6T Welded bolt hexagon bolt lines Hexagon head bolt Three protruding 7T lines 4T Hexagon head bolt Four protruding lines