Tohnichi STC3-G Digital Torque & Angle Screwdriver
Digital Torque Screwdriver with Angle Detection
The all-new STC3-G measures both peak tightening torque and final rotation angle to improve fastening reliability in low-torque assembly and inspection applications. Torque-and-angle monitoring helps detect abnormalities such as double tightening and insufficient rotation caused by galling or seizure. Its slim design, high-visibility OLED display and 360-degree LED notification ring provide clear, immediate operator feedback.
Selectable Tightening Mode and Inspection Mode support production fastening, retightening inspection and breakaway torque inspection. Programmable upper and lower limits for torque and angle provide automatic Pass/Fail judgement.
Multicolour 360-degree LED ring and buzzer provide visible and audible pre-alarm, tightening-complete and OK/NG notification. High-visibility OLED display shows torque, angle, memory number, battery status and Bluetooth connection status. Reversible measurement display supports comfortable viewing in different working positions.
Key Features
- Compact Design: 35% smaller than STC2-G, perfect for tight spaces.
- Improved UI: High-visibility OLED display.
- Error Proofing: Gyro sensor detects angles to prevent double-tightening and galling.
- Bluetooth® Built-in: Supports HOGP/GATT for direct data linkage with Excel, reducing setup costs.
- Two types of ergonomic handles are used, improving work efficiency.
Bluetooth Version Available
- Bluetooth® GATT communication supports bidirectional connection with compatible tightening-management applications on Windows® PCs and iPad® devices.
- Bluetooth® HOGP keyboard mode allows measurement data to be entered directly into Excel® and other electronic forms without specialized data-entry software.
- The "STC3-G-BT" series can be managed using the new TDMS App (free of charge), which will be launched soon. Available for Android, iOS, Windows.
Further Features & Specifications
- Three models cover torque ranges from 5 to 500 cN·m., English, and Metric equivalents
- Model-specific torque accuracy is ±1% or ±2%, depending on the measurement range; angle accuracy is ±2° + 1 digit.
- Supports clockwise, counterclockwise or both-direction torque measurement and peak hold.
- Automatic memory/reset, auto-zero, auto power-off and over-torque alarm functions help simplify operation and protect the sensor.
- Stores up to 1,000 measurement records, including torque, angle and Pass/Fail results.
- Stored data can be output or deleted in batches using the onboard data-processing menu.
- USB Type-C connection supports charging and wired serial data output to a PC.
- Rechargeable Ni-MH battery (BP-8) provides approximately 50 hours of continuous operation with an approximate charging time of 4 hours 30 minutes.
- Calibration certificate and quick-start manual are included.
| Model | Item No. | T Range [cN·m] | T Range [lbf·in] | T Range [ozf·in] | T Range [kgf·cm] | Length [mm] | Weight [kg] |
|---|---|---|---|---|---|---|---|
| STC50CN3-G | T201002 | 5 - 50 | 0.4 - 4.4 | 7.1 - 71 | 0.5 - 5.1 | 225 | 0.229 |
| STC200CN3-G | T201004 | 20 - 200 | 1.8 - 18 | – | 2.0 - 20 | 225 | 0.233 |
| STC500CN3-G | T201006 | 50 - 500 | 4.4 - 44 | – | 5.1 - 51 | 225 | 0.267 |
| Model | Item No. | T Range [cN·m] | T Range [lbf·in] | T Range [ozf·in] | T Range [kgf·cm] | Length [mm] | Weight [kg] |
|---|---|---|---|---|---|---|---|
| STC50CN3-G-BT | T201002-BT | 5 - 50 | 0.4 - 4.4 | 7.1 - 71 | 0.5 - 5.1 | 225 | 0.229 |
| STC200CN3-G-BT | T201004-BT | 20 - 200 | 1.8 - 18 | – | 2.0 - 20 | 225 | 0.233 |
| STC500CN3-G-BT | T201006-BT | 50 - 500 | 4.4 - 44 | – | 5.1 - 51 | 225 | 0.267 |
Specification as stated by manufacturer. It is recommended to use in moderate performance range (approx. 1/3 to 4/5 of rated capacity). If you were to regularly work at the tool’s capacity limit, a larger model would generally be the better option.
All specifications without guarantee, errors and omissions excepted.
Bluetooth® is a registered trademark of Bluetooth SIG, Inc.