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Preset Torque Wrenches for Coaxial Connectors

  • 5/16" Hex for Use with Coaxial Connectors
  • Preset Torque Value of 5 in-lbs or 8 in-lbs
  • Engraved for Easy Identification


5 in-lbs Torque Wrench, 5/16" Hex

TQW8A 8 in-lbs torque wrench used to secure a 2.92 mm connector. The break-over design ensures that the proper mating torque is supplied.

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Coaxial Connector Wrench
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Each Wrench is Engraved for Easy Identification in the Field


  • Break-Over Design Ensures Proper Mating Torque is Supplied
  • Preset Torque Values Prevent Over-Tightening Connectors
    • TQW5A: 5 in-lbs (0.57 N•m) for Most SMA Connectors
    • TQW8A: 8 in-lbs (0.90 N•m) for 3.5 mm, 2.92 mm, 2.4 mm, 1.85 mm, K™, and V™ Connectors*
  • Engraved with Preset Torque Value, Torque Direction, Wrench Size, and Item #
  • Ideal for Use with Our Premium Microwave Cables and Adapters

These 5/16” Torque Wrenches have a preset torque value to ensure that the proper amount of torque is supplied when mating two coaxial connectors. The TQW5A is set to provide 5 in-lbs of torque, which is ideal for most SMA connectors, while the TQW8A is set to provide 8 in-lbs of torque, which is ideal for 3.5 mm, 2.92 mm, 2.4 mm, 1.85 mm, K, and V connectors. 

When the preset torque value has been achieved, the break-over design will cause the pivoting joint to "break", as shown in the image above. This will prevent further force from being applied to the connector. The wrench's hex head will move back into place once the force is removed. Each wrench is engraved with its preset torque value, torque direction, wrench size, and item # for easy identification in the field.

The preset torque value for each wrench is guaranteed for one year from the date of purchase. If necessary, wrenches may be returned to Thorlabs for recalibration, please contact Tech Support for details.

*K™ and V™ are trademarks of Anritsu.

Posted Comments:
devis.sattolo  (posted 2018-01-04 13:47:28.15)
TQW8A 5/16" Calibrated Torque Wrench for Coaxial Connectors, 8 in-lbs arrived without any document about conformity and calibration, but the description is different!!
tfrisch  (posted 2018-01-04 09:23:27.0)
Hello, thank you for contacting Thorlabs. We have contacted you with a Certificate of Conformance.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
TQW5A Support Documentation
TQW5A5/16" Preset Torque Wrench for Coaxial Connectors, 5 in-lbs
TQW8A Support Documentation
TQW8A5/16" Preset Torque Wrench for Coaxial Connectors, 8 in-lbs
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