PREVIOUS STANDARD
| Grade (Strength grade) | Bolt size | Bolt diameter mm | Hexagonal width across flats 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 | 10 | 1.0 | 5.5 | 0.56 | 4 | 49 | 7 | 0.71 | 5 | 62 |
| M8 | 8.0 | 12 | 1.25 | 13.5 | 1.4 | 10 | 17 | 1.7 | 13 | |||
| 1.0 | 13.5 | 1.4 | 10 | 17 | 1.7 | 13 | ||||||
| M10 | 10.0 | 14 | 1.5 | 28 | 2.9 | 21 | 35 | 3.6 | 26 | |||
| 1.25 | 28 | 2.9 | 21 | 35 | 3.6 | 26 | ||||||
| M12 | 12.0 | 17 | 1.75 | 45 | 4.6 | 33 | 55 | 5.6 | 41 | |||
| 1.25 | 45 | 4.6 | 33 | 65 | 6.6 | 48 | ||||||
| M14 | 14.0 | 19 | 1.5 | 80 | 8.2 | 59 | 100 | 10 | 74 | |||
| 7T | M6 | 6.0 | 10 | 1.0 | 9 | 0.92 | 7 | 80 | 11 | 1.1 | 8 | 97 |
| M8 | 8.0 | 12 | 1.25 | 22 | 2.2 | 16 | 28 | 2.9 | 21 | |||
| 1.0 | 22 | 2.2 | 16 | 28 | 2.9 | 21 | ||||||
| M10 | 10.0 | 14 | 1.5 | 45 | 4.6 | 33 | 55 | 5.6 | 41 | |||
| 1.25 | 45 | 4.6 | 33 | 55 | 5.6 | 41 | ||||||
| M12 | 12.0 | 17 | 1.75 | 80 | 8.2 | 59 | 100 | 10 | 74 | |||
| 1.25 | 80 | 8.2 | 59 | 100 | 10 | 74 | ||||||
| M14 | 14.0 | 19 | 1.5 | 130 | 13 | 96 | 170 | 17 | 125 | |||
| 9T | M6 | 6.0 | 10 | 1.0 | 11 | 1.1 | 8 | 13.5 | 1.4 | 10 | ||
| M8 | 8.0 | 12 | 1.25 | 28 | 2.9 | 21 | 35 | 3.6 | 26 | |||
| 1.0 | 28 | 2.9 | 21 | 35 | 3.6 | 26 | ||||||
| M10 | 10.0 | 14 | 1.5 | 55 | 5.6 | 41 | 80 | 8.2 | 59 | |||
| 1.25 | 55 | 5.6 | 41 | 80 | 8.2 | 59 | ||||||
| M12 | 12.0 | 17 | 1.75 | 100 | 10 | 74 | 130 | 13 | 96 | |||
| 1.25 | 100 | 10 | 74 | 130 | 13 | 96 | ||||||
| M14 | 14.0 | 19 | 1.5 | 170 | 17 | 125 | 210 | 21 | 155 | |||
| CAUTION | The parts with aluminum or the cast iron washer surface/thread surface are excluded. |