When the tightness of a screw or bolt matters, your torque wrench must be able to help you apply the precise amount of torque needed to match the specifications required; this means making sure it is properly calibrated at all times. Not only will this make sure you are not over-tightening a bolt or leaving it too loose, it will also help you extend the life of the instrument, help you avoid costly repairs, and keep your customers happy. The problem is that there is no single answer to the question, “how often do I need torque wrench calibration?” Calibrating too frequently can be expensive and unnecessary; but not calibrating frequently enough can lead to safety issues, quality problems, and associated costs of its own.

Here are 8 things to consider when planning your torque wrench calibration schedule:

While calendar-based calibration schedules is a good place to start with your planning (every 12 months for example), that does not always keep your instruments operating at their best. It all comes down to the factors explained above, so be sure to factor them in.