0-16 TIGHTENING TORQUE TABLE Class Nominal diameter mm Pitch mm Standard tightening torque Hexagon head bolt Hexagon flange bolt N·m kgf·cm ft·lbf N·m kgf·cm ft·lbf 4T 6 8 10 12 14 16 1.0 1.25 1.25 1.25 1.5 1.5 5.4 13 25 47 75 113 55 130 260 480 760 1150 48in·lbf 9 19 35 55 83 5.9 14 28 53 83 60 145 290 540 850 52in·lbf 10 21 39 61 5T 6 8 10 12 14 16 1.0 1.25 1.25 1.25 1.5 1.5 6.4 16 32 59 91 137 65 160 330 600 930 1400 56in·lbf 12 24 43 67 101 7.5 18 36 65 100 157 75 175 360 670 1050 1600 65in·lbf 13 26 48 76 116 6T 6 8 10 12 14 16 1.0 1.25 1.25 1.25 1.5 1.5 7.8 19 38 72 110 170 80 195 400 730 1100 1750 69in·lbf 14 29 53 80 127 8.8 21 43 79 123 191 90 215 440 810 1250 1950 78in·lbf 16 32 59 90 141 7T 6 8 10 12 14 16 1.0 1.25 1.25 1.25 1.5 1.5 11 25 52 95 147 226 110 260 530 970 1500 2300 8 19 38 70 108 166 12 28 58 103 167 120 290 590 1050 1700 9 21 43 76 123 8T 6 8 10 12 14 16 1.0 1.25 1.25 1.25 1.5 1.5 12 29 61 108 172 265 125 300 620 1100 1750 2700 9 22 45 80 127 195 14 32 68 123 196 299 145 330 690 1250 2000 3050 9 24 50 90 145 221