Preset Torque Wrenches

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Figure G1.1  Each Wrench is Engraved for Easy Identification

• Preset Wrenches for Coaxial Connectors (See Table G1.2 for Compatibility):
  • TQW4A: 6 mm Hex, 4 lb-in Torque
  • TQW5A: 5/16" Hex, 5 lb-in Torque
  • TQW8A: 5/16" Hex, 8 lb-in Torque
• Ideal for Use with Our Premium Microwave Cables and Adapters

These torque wrenches have a preset torque value to ensure that the proper amount of torque is supplied when mating two coaxial connectors. The TQW4A is set to provide 4 lb-in of torque, which is ideal for 1.0 mm connectors; the TQW5A is set to provide 5 lb-in of torque, which is ideal for most SMA connectors; and the TQW8A is set to provide 8 lb-in 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. The torque wrench should be held at the load-point line inscribed near the end of the handle; holding the handle at a different location will affect the amount of torque applied to the connector. The specified torque is guaranteed only when tightening in the direction indicated by the arrow engraved on the handle. Each wrench is also engraved with its preset torque value, torque direction, wrench size, and Item # for easy identification in the field; the TQW4A also includes an engraved serial number.

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.

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Figure G2.1  Each wrench is engraved with its preset torque value and Item #.

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Figure G2.2  TW6 Torque Wrench Used to Secure POLARIS-LN05 Lock Nut on POLARIS-K05T2 Mirror Mount

• Preset Wrenches for Polaris Lock Nuts & Spanner Wrenches (See Table G2.3 for Compatibility):
  
  • TW6: 6 mm Hex, 24 oz-in Torque
  • TW13: 13 mm Hex, 32 oz-in Torque
  • TW18: 18 mm Hex, 48 oz-in Torque
• Ideal for Applications Requiring Long-Term Locking

These torque wrenches have a preset torque value to secure the lock nuts on Polaris mounts for long-term locking; see Table G2.3 for specifications. Each wrench features a break-over design that allows the wrench to pivot at a joint, as shown in Figure 2.2. Engraved guidelines indicate the angle the wrench should not pivot past in order to apply the specified torque; pivoting the handle past these guidelines will over-torque the lock nut. The torque wrench should be held at the load-point line inscribed near the end of the handle when tightening a lock nut; holding the handle at a different location will affect the amount of torque applied to the lock nut. The specified torque is guaranteed only when tightening in the direction indicated by the arrow engraved on the handle. Each wrench is also engraved with its preset torque value, torque direction, wrench size, serial number, and Item # for easy identification in the field.

These wrenches are designed to be compatible with cleanroom and vacuum chamber applications. They are chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface. After passivation, they are assembled in a clean environment and double vacuum bagged to eliminate contamination when transported into a cleanroom. Every wrench has a bead-blasted finish to minimize reflections when working with setups that include lasers.

Please note that these wrenches are not intended for use in applications where adjusters are frequently tuned, as these applications typically require torque values of 4 to 8 oz-in (0.03 to 0.06 N·m).