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NMGI0010 Grade Bolt size Bolt diam- eter * mm Pitch mm Tightening torque (Without lubricant) Hexagon head bolt Hexagon flange bolt N·m kg-m ft-lb in-lb N·m kg-m ft-lb in-lb 4T M6 6.0 1.0 5.1 0.52 3.8 45.1 6.1 0.62 4.5 53.8 M8 8.0 1.25 13 1.3 9 — 15 1.5 11 — 1.0 13 1.3 9 — 16 1.6 12 — M10 10.0 1.5 25 2.5 18 — 29 3.0 22 — 1.25 25 2.6 19 — 30 3.1 22 — M12 12.0 1.75 42 4.3 31 — 51 5.2 38 — 1.25 46 4.7 34 — 56 5.7 41 — M14 14.0 1.5 74 7.5 54 — 88 9.0 65 — 7T M6 6.0 1.0 8.4 0.86 6.2 74.6 10 1.0 7 87 M8 8.0 1.25 21 2.1 15 — 25 2.5 18 — 1.0 22 2.2 16 — 26 2.7 20 — M10 10.0 1.5 41 4.2 30 — 48 4.9 35 — 1.25 43 4.4 32 — 51 5.2 38 — M12 12.0 1.75 71 7.2 52 — 84 8.6 62 — 1.25 77 7.9 57 — 92 9.4 68 — M14 14.0 1.5 127 13.0 94 — 147 15.0 108 — 9T M6 6.0 1.0 12 1.2 9 — 15 1.5 11 — M8 8.0 1.25 29 3.0 22 — 35 3.6 26 — 1.0 31 3.2 23 — 37 3.8 27 — M10 10.0 1.5 59 6.0 43 — 70 7.1 51 — 1.25 62 6.3 46 — 74 7.5 54 — M12 12.0 1.75 98 10.0 72 — 118 12.0 87 — 1.25 108 11.0 80 — 137 14.0 101 — M14 14.0 1.5 177 18.0 130 — 206 21.0 152 — *: Nominal diameter Special parts are excluded. 2) This standard is applicable to bolts having the following marks embossed on the bolt head. MGI044A MA EM LC EC FE CL MT AT PD AX SU BR ST RS BT HA SC EL IDX TIGHTENING TORQUE OF STANDARD BOLTS GI-45 |