Torque Wrenches & Fasteners
Proper Tightening
Learn TechniquesProper torque application ensures fasteners are tight enough to hold but not so tight they strip or break. Torque wrenches provide precise, repeatable tightening for safety-critical applications.
Common Torque Specifications
| Application | Torque (N·m) | Torque (ft·lb) |
|---|---|---|
| Spark plugs | 15-30 | 11-22 |
| Lug nuts (car) | 100-140 | 74-103 |
| Cylinder head bolts | 40-80 | 30-60 |
| Oil drain plug | 25-40 | 18-30 |
| Bicycle pedals | 35-40 | 26-30 |
Always verify specifications for your specific application.
Conclusion
Torque wrenches are essential tools for safety-critical fasteners. Always use manufacturer specifications, apply torque smoothly, and calibrate tools regularly. For wheel lug nuts and engine components, proper torque prevents dangerous failures.