Start with the specified torque for the fasteners you work on. Then choose a wrench whose range, drive size and measurement units match the job.
Start with the service specification
Use the equipment or vehicle manufacturer’s service information for the correct torque value, tightening sequence and fastener condition. There is no universal torque value for bolts of a given size.
Choose an appropriate range
Look at the wrench’s specified operating and accuracy range. A high-capacity wrench may not be suitable for small, low-torque fasteners. Check units carefully: inch-pounds, foot-pounds and newton-meters are different.
Mechanical or digital?
Click-type tools signal when the preset value is reached. Digital tools may display torque and offer additional feedback or modes. Compare the manufacturer’s specifications and handling requirements, rather than assuming either type is always more accurate.
Keep it dependable
Follow the manufacturer’s instructions for storage, calibration and permitted use. Avoid using a torque wrench as a breaker bar unless the manufacturer explicitly allows it.