Torque Wrench Calibration

Torque Wrench Calibration

Torque Wrench Calibration Capability – 1.5-1100 ft/lbs (2-1500 Nm)

  • Click Type Torque Wrenches
  • Digital Torque Wrenches
  • Manual Torque Drivers
  • Automatic Torque Drivers – DC or Pneumatic
  • Vertical Torque Testers
  • Horizontal (bench top) Torque Testers
  • Torque Multipliers

Torque Wrench Calibration

PCS is your source for quality torque wrench calibration with the fastest turnaround time in the country!  With our highly trained staff, we have the capability to calibrate any type of torque wrench including click type torque wrenches, digital torque wrenches, manual torque drivers and automatic torque drivers ranging anywhere between  (1.5 ft/lbs to 1100 ft/lbs).  We also provide calibration services for vertical and horizontal torque testers and torque multipliers that can be performed either here in our lab or on-site at your facility.  Our high precision “Norbar Pro-Test” torque calibration system has been retrofitted to provide on-site torque wrench calibration at your facility.  Torque testers and multipliers are calibrated with the use of dead weights and specialized torque arms which are customized to fit most manufacturers and models.  Please contact PCS today and one of our trained specialists will assist you with your torque calibration needs!

We are an authorized distributor of and can supply you with any new torque instruments you may need!


Torque Wrenches

The purpose of a torque wrench is to apply the correct amount of force when tightening a fastener such as a bolt or nut. Originally, the torque wrench was designed to prevent over-tightened bolts on water main and steam pipes throughout the New York City water department.  Since 1918 the use of torque wrenches has expanded and is now a commonly used tool in many different industries such as manufacturing, construction, maintenance, areospace and transportation.  Controlling torque is an important task for a wide range of industries from manufacturing to aerospace.  Companies must be assured that torque specifications are met during their manufacturing processes to ensure the quality and, most importantly, the safety of their product.  A rigid and sustained calibration program is essential to maintain this ever important goal.

There are several types of torque wrenches and each type is available in many different sizes and designed to suit a wide range of torque specifications. Click type, slip type and break type are three basic styles of torque wrenches:

  • Click torque wrenches make a loud “click” noise when the specified torque is reached. Over-torque conditions are common with this style of torque wrench due to the fact that the click occurs around 3 degrees after the specified torque is reached.
  • Break torque wrenches indicate the specified torque has been reached by deflecting 20-90 degrees on delivery. This limits the amount of torque applied.
  • Slip torque wrenches prevent over-torque by sending a signal when specified torque is achieved and then release.

A preset torque wrench is designed to measure one specific torque. Some preset torque wrenches have no external scale but are internally adjustable within a specified range and come with a special tool to make the adjustment. Other preset torque wrenches, such as a T handle or T bar, are not adjustable. Adjustable torque wrenches have an external scale near the handle showing the available range in increments of the measuring unit such as foot lbs (ft/lbs). The handle is turned until line or arrow meets up with the desired amount of torque. Common units of measure for torque wrenches are inch pounds (in/lbs), foot pounds (ft/lbs), Newton meters (Nm), centimeters per inch (cm/in), kilogram-force per centimeter (kgf/cm) and ounces-force per inch (ozf/in).

Torque wrenches should be checked often for wear or defective parts. Any adjustable torque wrench should be stored at 20% of the full scale value of the range to prevent damage to internal parts. Most manufacturers recommend calibration of a torque wrench after every 5000 to 7000 cycles or 1 year.  A “cycle” of a torque wrench is completed each time a torque wrench is used to meet the amount of torque it has been set to.

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On Site Torque Wrench Calibration Services

At PCS, we provide on-site calibration services to customers residing in Tennessee, Virginia, Alabama or Kentucky. If your establishment is near one of the following locations, we can perform your required torque calibration services on-site:

  • Knoxville, TN
  • Johnson City, TN
  • Nashville, TN
  • Bristol, TN
  • Murfreesboro, TN
  • Kingsport, TN
  • Chattanooga, TN
  • Abingdon, VA
  • Huntsville, AL
  • Decatur, AL
  • Louisville, KY
  • Lexington, KY

Contact us today to schedule an appointment.

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Accreditation and Documentation

All calibrations are traceable to the SI through NIST, (National Institute of Standard and Technology) and include “long form” calibration certificates with as-found/as-left data. ISO/IEC-17025 accredited calibration is available upon request. We also offer a web based calibration interface, “e-certificates” that gives you access to electronic copies of your calibration certificates which can be viewed and printed at your convenience. Standard turnaround time is 48 hours.