Service Information Guide (All models) 14A-15 Strength category 4.8 4T 7T Bolt head shape Hex bolt Flange bolt Hex bolt Flange bolt M6 x 1 : 3.9 to 7.8 N・m { 0.4 to 0.8 kgf・m / 35 to 69 lb・ in } : 4.6 to 8.5 N・m { 0.5 to 0.9 kgf・m / 41 to 75 lb・ in } : 4.9 to 9.8 N・m { 0.5 to 1.0 kgf・m / 43 to 87 lb・ in } : 5.7 to 10.6 N・m { 0.6 to 1.1 kgf・m / 50 to 94 lb・in } M8 x 1.25 : 7.8 to 17.7 N・m { 0.8 to 1.8 kgf・m / 69 to 157 lb・in } : 10.5 to 19.6 N・m { 1.1 to 2.0 kgf・m / 93 to 173 lb・in } : 11.8 to 22.6 N・m { 1.2 to 2.3 kgf・m / 9 to 17 lb・ ft } : 13.5 to 25.0 N・m { 1.4 to 2.5 kgf・m / 10 to 18 lb・ft } M10 x 1.25 : 20.6 to 34.3 N・m { 2.1 to 3.5 kgf・m / 15 to 25 lb・ft } : 23.1 to 38.5 N・m { 2.4 to 3.9 kgf・m / 17 to 28 lb・ft } : 27.5 to 46.1 N・m { 2.8 to 4.7 kgf・m / 20 to 34 lb・ft } : 31.0 to 51.7 N・m { 3.2 to 5.3 kgf・m / 23 to 38 lb・ft } *M10 x 1.5 : 19.6 to 33.3 N・m { 2.0 to 3.4 kgf・m / 14 to 25 lb・ft } : 22.3 to 37.2 N・m { 2.3 to 3.8 kgf・m / 16 to 27 lb・ft } : 27.5 to 45.1 N・m { 2.8 to 4.6 kgf・m / 20 to 33 lb・ft } : 30.3 to 50.4 N・m { 3.1 to 5.1 kgf・m / 22 to 37 lb・ft } M12 x 1.25 : 49.0 to 73.5 N・m { 5.0 to 7.5 kgf・m / 36 to 54 lb・ft } : 54.9 to 82.3 N・m { 5.6 to 8.4 kgf・m / 40 to 61 lb・ft } : 60.8 to 91.2 N・m { 6.2 to 9.3 kgf・m / 45 to 67 lb・ft } : 68.1 to 102.1 N・m { 6.9 to 10.4 kgf・m / 50 to 75 lb・ft } *M12 x 1.75 : 45.1 to 68.6 N・m { 4.6 to 7.0 kgf・m / 33 to 51 lb・ft } : 51.0 to 76.5 N・m { 5.2 to 7.8 kgf・m / 38 to 56 lb・ft } : 56.9 to 84.3 N・m { 5.8 to 8.6 kgf・m / 42 to 62 lb・ft } : 62.7 to 94.0 N・m { 6.4 to 9.6 kgf・m / 46 to 69 lb・ft } M14 x 1.5 : 76.5 to 114.7 N・m { 7.8 to 11.7 kgf・m / 56 to 85 lb・ft } : 83.0 to 124.5 N・m { 8.5 to 12.7 kgf・m / 61 to 92 lb・ft } : 93.2 to 139.3 N・m { 9.5 to 14.2 kgf・m / 69 to 103 lb・ft } : 100.8 to 151.1 N・m { 10.3 to 15.4 kgf・m / 74 to 111 lb・ft } *M14 x 2 : 71.6 to 106.9 N・m { 7.3 to 10.9 kgf・m / 53 to 79 lb・ft } : 77.2 to 115.8 N・m { 7.9 to 11.8 kgf・m / 57 to 85 lb・ft } : 88.3 to 131.4 N・m { 9.0 to 13.4 kgf・m / 65 to 97 lb・ft } : 94.9 to 142.3 N・m { 9.7 to 14.5 kgf・m / 70 to 105 lb・ft } M16 x 1.5 : 104.0 to 157.0 N・m { 10.6 to 16.0 kgf・m / 77 to 116 lb・ft } : 115.6 to 173.3 N・m { 11.8 to 17.7 kgf・m / 85 to 128 lb・ft } : 135.3 to 204.0 N・m { 13.8 to 20.8 kgf・m / 100 to 150 lb・ft } : 150.1 to 225.2 N・m { 15.3 to 23.0 kgf・m / 111 to 166 lb・ft } *M16 x 2 : 100.0 to 149.1 N・m { 10.2 to 15.2 kgf・m / 74 to 110 lb・ft } : 109.4 to 164.2 N・m { 11.2 to 16.7 kgf・m / 81 to 121 lb・ft } : 129.4 to 194.2 N・m { 13.2 to 19.8 kgf・m / 95 to 143 lb・ft } : 142.5 to 213.8 N・m { 14.5 to 21.8 kgf・m / 105 to 158 lb・ft } M18 x 1.5 : 151.0 to 225.6 N・m { 15.4 to 23.0 kgf・m / 111 to 166 lb・ft } - : 195.2 to 293.2 N・m { 19.9 to 29.9 kgf・m / 144 to 216 lb・ft } - *M18 x 2.5 : 151.0 to 225.6 N・m { 15.4 to 23.0 kgf・m / 111 to 166 lb・ft } - : 196.1 to 294.2 N・m { 20.0 to 30.0 kgf・m / 145 to 217 lb・ft } - M20 x 1.5 : 206.0 to 310.0 N・m { 21.0 to 31.6 kgf・m / 152 to 229 lb・ft } - : 269.7 to 405.0 N・m { 27.5 to 41.3 kgf・m / 199 to 299 lb・ft } - *M20 x 2.5 : 190.2 to 286.4 N・m { 19.4 to 29.2 kgf・m / 140 to 211 lb・ft } - : 249.1 to 374.6 N・m { 25.4 to 38.2 kgf・m / 184 to 276 lb・ft } - M22 x 1.5 : 251.1 to 413.8 N・m { 25.6 to 42.2 kgf・m / 185 to 305 lb・ft } - : 362.8 to 544.3 N・m { 37.0 to 55.5 kgf・m / 268 to 401 lb・ft } - *M22 x 2.5 : 217.7 to 327.5 N・m { 22.2 to 33.4 kgf・m / 161 to 242 lb・ft } - : 338.3 to 507.0 N・m { 34.5 to 51.7 kgf・m / 250 to 374 lb・ft } -