Product Description

The Tohnichi Torque Screwdriver - RTD1.3I
This 1/4" adjustable torque screwdriver can be used for any tightening operation such as mass production assembly and maintenance. The rotary slip clutch reduces the possibility of over-torque. Once torque set is achieved, even if more force is applied, the tool ratchets and does not add additional torque.
Tohnichi RTD1.3I Features:
- Adjustable torque setting by twisting shaft with main and supplementary scales
- Models are available in SI, Metric or English units of measure --one unit of measure on tool
- Lock ring holds selected torque value in place
- For Clockwise tightening only
- Click alerts user that torque set has been achieved
- Rotary slip mechanism prevents over torque by ratcheting after click
- Accuracy +/-3% of indicated value
- Mid range models have removable colored resin grip
- Large models includes hook to assist with turning shaft to set tool for higher values.
- Accepts 1/4 hex bits (not included) See Accessories tab above
- Includes Certificate of Calibration (NIST Traceable Cert offered for additional fee)
| MODEL | TORQUE RANGE | Dimensions [mm] | Weight Approx. | Accessories | |||||||||
| Overall Length | Grip | Body | |||||||||||
| New Model Name | min.-max. | Graduation | L' | D1 | D2 | D3 | D4 | L1 | L2 | kg | Removeable Resin Grip | Handle Bar | Hook Spanner |
| New AMERICAN | AMERICAN | ||||||||||||
| RTD1.3I | in·lbs 0.2-1.3 | in·lbs 0.01 | 100 | 16 | 10.7 | 11 | 21.5 | 18 | 76.5-84.3 | 0.05 | N/A | - | - |
Note:
- This series accepts standard 6.35 (1/4) hex bits, sold separately.

Made In Japan
The Tohnichi Torque Screwdriver - RTD1.3I combines precision with reliability, making it an essential tool for any professional or DIY enthusiast involved in assembly and maintenance work. With an adjustable torque range of 0.2 to 1.3 in-lbs, this screwdriver is designed to meet the stringent demands of mass production and detailed tasks alike.
Engineered with a rotary slip clutch mechanism, the RTD1.3I significantly minimizes the risk of over-torqueing. This tool ratchets when the predetermined torque setting is reached, ensuring consistent results every time. Its seamless functionality and user-friendly design will enhance your productivity.
- Adjustable torque setting via twisted shaft with main and supplementary scales
- Available in various units: SI, Metric, or English, ensuring versatility
- Lock ring secures the selected torque value, preventing accidental changes
- Designed exclusively for clockwise tightening operations
- Click mechanism provides auditory feedback upon reaching desired torque
- Rotary slip feature averts over-torque by engaging ratchet after a click
- Accuracy maintained within +/-3% of indicated value for dependable results
- Optional removable colored resin grip on mid-range models for comfort
- High capacity models equipped with hook to aid in setting higher torque values
- Compatible with standard 1/4 hex bits (sold separately) for extensive applications
- Includes Certificate of Calibration for traceable accuracy (NIST option available for extra fee)
Achieve precision and control in your tightening tasks with the Tohnichi Torque Screwdriver - RTD1.3I, made in Japan and built for excellence. Invest in quality that lasts and experience the difference in performance.