How Often Should You Calibrate? Torque Screwdriver Maintenance and Care Tips

A torque screwdriver is an essential precision tool for electronics repair, firearm assembly, bicycle maintenance, and other delicate mechanical tasks. It ensures that every screw is tightened to the correct torque specification, preventing damage and guaranteeing safety. But just like a torque wrench, a screwdriver with torque control requires regular calibration and maintenance to remain accurate.

Why Torque Screwdriver Calibration Is Important

Calibration ensures your torque screwdriver delivers the correct torque value. Over time, internal springs and clutches can wear down, leading to torque drift. Even small errors can cause:

• Under-tightening → screws may loosen and compromise safety.
• Over-tightening → threads can strip or parts may crack.

By scheduling regular calibration, you maintain precision, reduce costly errors, and extend tool life.

How Often Should You Calibrate a Torque Screwdriver?

The right calibration interval depends on how often and where the screwdriver is used:

• Heavy daily use (factories, repair shops): every 3–6 months.
• Moderate use (DIY or occasional workshop tasks): once a year.
• Critical industries (aerospace, medical, firearms): before each major project or as required by compliance standards.

👉 Pro tip: Most manufacturers recommend annual torque screwdriver calibration, but if your tool is dropped, overloaded, or used in extreme environments, recalibrate sooner.

Torque Screwdriver Maintenance Tips

Calibration is only part of the story. Good torque screwdriver maintenance practices help you keep accuracy longer:

1. Reset to Zero After Use
   For adjustable torque screwdrivers, always return the scale to the lowest setting to release spring tension.
2. Never Exceed Maximum Torque
   Overloading can permanently damage the mechanism. Use the right size tool for each task.
3. Store in a Protective Case
   Avoid humidity, dust, and direct sunlight. A clean, dry environment extends tool life.
4. Clean After Each Use
   Wipe away oil, dust, and debris. For sensitive applications (electronics, optics), cleanliness ensures consistent torque.
5. Handle With Care
   Dropping the tool can misalign internal parts and affect torque accuracy.

Signs That It’s Time for Professional Calibration

Even with good care, there are moments when only professional torque screwdriver calibration services can restore accuracy. Look for these signs:

• Inconsistent torque results
• Slipping or unusual resistance
• Visible damage or wear

Certified calibration services use traceable standards, ensuring your tool meets industry requirements.

Final Thoughts

A torque screwdriver is an investment in precision. Regular calibration combined with proper maintenance keeps your tool accurate and reliable for years. Whether you’re a professional technician or a DIY enthusiast, these torque screwdriver care tips will help you achieve consistent, safe results in every project.