Bolt torque specification reference for SAE and metric fasteners. Click any size for torque values by grade/class, lubrication effects, and tightening notes.
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SAE/Imperial Bolt Torque Specs
| Bolt Size |
|---|
| 1/4″-20 |
| 5/16″-18 |
| 3/8″-16 |
| 7/16″-14 |
| 1/2″-13 |
| 9/16″-12 |
| 5/8″-11 |
| 3/4″-10 |
| 7/8″-9 |
| 1″-8 |
| 1-1/8″-7 |
| 1-1/4″-7 |
| 1-3/8″-6 |
| 1-1/2″-6 |
Metric Bolt Torque Specs
| Bolt Size |
|---|
| M4x0.7 |
| M5x0.8 |
| M6x1 |
| M7x1 |
| M8x1.25 |
| M10x1.5 |
| M12x1.75 |
| M14x2 |
| M16x2 |
| M18x2.5 |
| M20x2.5 |
| M22x2.5 |
| M24x3 |
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