* Torque value s based upon d ry friction.
Table 6 — Recommended Torque
Bolt size 1/4” 5/16” 3/8” 1/2” 5/8” 3/4” 7/8” 1” 1 1/3” 1 1/2”
Grade SAE GR 5
Torque* Ft-lbs 3.5 7 12 31 63 115 180 275 550 960
N•m 4.7 9.5 16 42 85 156 244 373 746 1302
Bolt size M4 M6 M8 M10 M12 M10 M12 M16
Grade DIN 8.8 DIN 12.9
Torque* Ft-lbs 2 8 15 35 65 45 92 225
N•m 2.71120 478861125305