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Firstinfo torque screwdriver with T-handle and 1/4 hex holder

Firstinfo Tools Co., Ltd.

Firstinfo Precision Torque Screwdriver 5-25 in-lbs 1/4 Hex T-Handle

SKU CH-FDM5-HPDJT

A precision torque screwdriver covering 5 to 25 in-lbs in 0.5 in-lbs increments with ±6% accuracy, a 1/4 inch hex holder and an included T-handle for extra leverage

  • TypeTorque Tools
  • Adjustable torque in 0.5 in-lbs steps for precise fastening control
  • Automatic cam slip prevents over-tightening at the set torque value
  • ±6 % accuracy certified to ASME B107.300-2010 and ISO 6789 standards
  • Included T-handle provides extra leverage for high-torque applications
  • Quick-release 1/4 inch hex holder secures bits and allows fast changes

Precision Torque Screwdriver 5-25 in-lbs

The Firstinfo precision torque screwdriver covers a range of 5 to 25 in-lbs with 0.5 in-lbs increments. It uses a 1/4 inch universal hex bit holder with a quick-release collar. Accuracy is certified to ±6% per ASME B107.300-2010 and ISO 6789. A serialised calibration certificate is included with each unit.

Cam Slip Mechanism Prevents Over-Tightening

An internal cam automatically slips when the preset torque value is reached, stopping further tightening force. The locking knob is pressed to unlock the scale, then released to lock the setting securely. The quick-release bit holder retains bits firmly during use and releases them without extra tools. No motor or battery is involved, so there is no heat or noise.

Extra T-Handle Adds Leverage For High Torque

The supplied T-handle attaches to the driver end to provide additional leverage for the upper end of the 5-25 in-lbs range. This allows the operator to apply the required force with less wrist strain during sustained fastening. The tool remains a purely mechanical clicker-type driver; it does not generate continuous torque on its own. Buyers needing torque values above 25 in-lbs or a powered driver should consider a different tool class.

Highlights

  • Adjustable torque in 0.5 in-lbs steps for precise fastening control
  • Automatic cam slip prevents over-tightening at the set torque value
  • ±6 % accuracy certified to ASME B107.300-2010 and ISO 6789 standards
  • Included T-handle provides extra leverage for high-torque applications
  • Quick-release 1/4 inch hex holder secures bits and allows fast changes

Specifications

TypeTorque Tools

Questions about this item

How do I set the torque on this 5-25 in-lbs screwdriver and which step do people miss?

Press the locking knob, rotate the handle until the main and sub scales show the desired value such as 18.5 in-lbs, then release the knob so the spring-loaded collar locks the setting; the step often missed is releasing the knob to engage the lock.

What maintenance will this torque screwdriver need over time?

The tool ships with a calibration certificate traceable by serial number and meets ASME B107.300-2010 and ISO 6789 at ±6% accuracy; plan to send it for recalibration at your chosen interval to maintain certified accuracy.

What is the first limit I will hit when using this driver continuously at high torque?

The cam mechanism automatically slips when the set torque value is reached, preventing over-tightening; this slip action is the first limit encountered during sustained high-torque use.

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