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| DodgeRam.org > Main > Tech Index > Specs > SAE Bolt Torque > N•m Chart |
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| Bolt Assembly Torque (N•m) The torque values in the table are based on the use of lubricated threads. |
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| Coarse Thread | ||||
| Size | Grade 2 Iron | Grade 5 Iron | Grade 8 Iron | Aluminum |
| 1/4-20 (NC) | 9 | 15 | 8 | |
| 5/16-18 (NC) | 20 | 30 | 16 | |
| 3/8-16 (NC) | 40 | 55 | 25 | |
| 7/16-14 (NC) | 60 | 90 | 45 | |
| 1/2-13 (NC) | 95 | 130 | 75 | |
| 9/16-12 (NC) | 135 | 190 | 110 | |
| 5/8-11 (NC) | 180 | 255 | 150 | |
| 3/4-10 (NC) | 325 | 460 | 255 | |
| 7/8-9 (NC) | 490 | 745 | 380 | |
| 1-8 (NC) | 720 | 1100 | 570 | |
| Fine Thread | ||||
| Size | Grade 2 Iron | Grade 5 Iron | Grade 8 Iron | Aluminum |
| 1/4-28 (NF) | 12 | 18 | 9 | |
| 5/16-24 (NF) | 23 | 33 | 19 | |
| 3/8-24 (NF) | 40 | 60 | 35 | |
| 7/16-20 (NF) | 65 | 95 | 55 | |
| 1/2-20 (NF) | 100 | 150 | 80 | |
| 9/16-18 (NF) | 150 | 210 | 115 | |
| 5/8-18 (NF) | 210 | 290 | 160 | |
| 3/4-16 (NF) | 365 | 515 | 285 | |
| 7/8-14 (NF) | 530 | 845 | 420 | |
| 1-14 (NF) | 800 | 120 | 650 | |
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