Appendix C General Torque Specifications
Use the following torque specifications when service literature instructions give no specific torque values. The charts list values for new plated, zinc phosphate, or
oiled threads. Increase values by 15% for nonplated threads. All torque values are
American Standard Fasteners Torque Specifications
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| Grade 2 | Grade 5 | Grade 8 | ||||||
Size | Measurement | Grade 2 or 5 | |||||||
Nm (in. lb.) | 1.8 | (16) | 2.3 | (20) | — |
| 1.8 | (16) | |
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| Nm (in. lb.) | 2.9 | (26) | 3.6 | (32) | — |
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| Nm (in. lb.) | 2.9 | (26) | 3.6 | (32) | — |
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Nm (in. lb.) | 6.8 | (60) | 10.8 | (96) | 14.9 | (132) | 6.8 | (60) | |
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Nm (in. lb.) | 8.1 | (72) | 12.2 | (108) | 16.3 | (144) | 8.1 | (72) | |
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| Nm (in. lb.) | 13.6 | (120) | 21.7 | (192) | 29.8 | (264) | 13.6 | (120) |
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| Nm (in. lb.) | 14.9 | (132) | 23.1 | (204) | 32.5 | (288) | 14.9 | (132) |
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Nm (ft. lb.) | 24.0 | (18) | 38.0 | (28) | 53.0 | (39) | 24.0 | (18) | |
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Nm (ft. lb.) | 27.0 | (20) | 42.0 | (31) | 60.0 | (44) | 27.0 | (20) | |
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Nm (ft. lb.) | 39.0 | (29) | 60.0 | (44) | 85.0 | (63) | — | ||
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Nm (ft. lb.) | 43.0 | (32) | 68.0 | (50) | 95.0 | (70) | — | ||
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Nm (ft. lb.) | 60.0 | (44) | 92.0 | (68) | 130.0 | (96) | — | ||
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Nm (ft. lb.) | 66.0 | (49) | 103.0 | (76) | 146.0 | (108) | — | ||
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Nm (ft. lb.) | 81.0 | (60) | 133.0 | (98) | 187.0 | (138) | — | ||
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Nm (ft. lb.) | 91.0 | (67) | 148.0 | (109) | 209.0 | (154) | — | ||
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Nm (ft. lb.) | 113.0 | (83) | 183.0 | (135) | 259.0 | (191) | — | ||
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Nm (ft. lb.) | 128.0 | (94) | 208.0 | (153) | 293.0 | (216) | — | ||
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Nm (ft. lb.) | 199.0 | (147) | 325.0 | (240) | 458.0 | (338) | — | ||
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Nm (ft. lb.) | 222.0 | (164) | 363.0 | (268) | 513.0 | (378) | — | ||
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Nm (ft. lb.) | 259.0 | (191) | 721.0 | (532) | 1109.0 | (818) | — | ||
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Nm (ft. lb.) | 283.0 | (209) | 789.0 | (582) | 1214.0 | (895) | — | ||
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Metric Fasteners Torque Specifications, Measured in Nm (ft. lb.)
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| Grade 5.8 | Grade 8.8 | Grade 10.9 | |||||
Size (mm) | Grade 5.8 or 8.8 | ||||||||
M6 | x 1.00 | 5.6 | (4) | 9.9 | (7) | 14.0 | (10) | 5.6 | (4) |
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M8 | x 1.25 | 13.6 | (10) | 25.0 | (18) | 35.0 | (26) | 13.6 | (10) |
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M8 | x 1.00 | 21.0 | (16) | 25.0 | (18) | 35.0 | (26) | 21.0 | (16) |
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M10 x 1.50 | 27.0 | (20) | 49.0 | (35) | 68.0 | (50) | 27.0 | (20) | |
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M10 x 1.25 | 39.0 | (29) | 49.0 | (35) | 68.0 | (50) | 39.0 | (29) | |
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M12 x 1.75 | 47.0 | (35) | 83.0 | (61) | 117.0 | (86) |
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M12 x 1.50 | 65.0 | (48) | 88.0 | (65) | 125.0 | (92) |
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M14 x 2.00 | 74.0 | (55) | 132.0 | (97) | 185.0 | (136) |
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M14 x 1.50 | 100.0 | (74) | 140.0 | (103) | 192.0 | (142) |
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M16 x 2.00 | 115.0 | (85) | 200.0 | (148) | 285.0 | (210) |
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M16 x 1.50 | 141.0 | (104) | 210.0 | (155) | 295.0 | (218) |
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M18 x 2.50 | 155.0 | (114) | 275.0 | (203) | 390.0 | (288) |
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M18 x 1.50 | 196.0 | (145) | 305.0 | (225) | 425.0 | (315) |
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