Use accurate torque controls to improve quality! Case examples can be found in torque handbook 8

Pokayoke torque wrenchNEW


Remote Signal Torque Wrench (with double tightening detection)
TUD markingRoHS markingHead insert 10DHead insert 12DHead insert 15DHead insert 19DHead insert 22D

Prevents human tightening errors (Pokayoke)


Interchangeable Head


Double tightening detection provides highly reliable prevention of missed tightening (Pokayoke). The R-256FH receiver has been upgraded to the downward compatible R-CM. This upgrade offers New Telecommunication Mode to increase transceiving distance, and lets operators monitor transmitter battery voltage.

CSPFHW100N3X15D “Pokayoke” (error proofing) wireless pre-set torque wrench with double tightening detection (shown with protective cover FHW-PCV attached)

[The Double Tightening Detection System] The CSPFHW series uses a gyro sensor to detect angle data, to make double tightening judgments.

• At stage 1, angle detection starts when trigger torque is reached, and a light clicking sensation is felt (at position “a”). At stage 2, when the set torque is reached, a strong clicking sensation with a distinctive clicking sound is felt (at position “b”).

• If the rotated angle is less than the set double tightening judgment angle (a - b'), double tightening is determined, resulting in a “NG” (No Good) judgment.

Shown with LED illuminated

Shown with M-FH radio module on receiver R-CM and AC adaptor BA8 in use

Example of CSPFHW model in use


  • Prevents human tightening errors (Pokayoke)
  • Double Tightening Prevention


  • Comes with double tightening detection to permit highly reliable “pokayoke” error proofing.
  • When the CSPFHW is used to retighten bolts and nuts that have already been tightened once, the action will be judged as double tightening, causing NG (“No Good”) to be displayed and the LED light to show red.
  • The large LED makes it easy for the operator to check close at hand the telecommunication status and whether double tightening has occurred.
  • New Communication Mode permits use of the new R-CM Wireless Receiver with Interchangeable Modules. New Communication Mode extends wireless distance to around 20–30 meters, while also permitting R-CM monitoring of the transmitter battery voltage. This helps prevent transmission failures caused by unexpected reduction in voltage.
  • You can use the same receiver (R-CM) and the same setting controller (SB-FH2) for wireless CH settings as those for the FHM/FH wireless Pokayoke (error proofing) torque wrench. This gives you double tightening detection with the purchase of only the torque wrench, reducing purchase cost.
  • Traceability is connected. Torque wrenches can be identified with a 7-digit alphanumeric character ID or 3-digit ID, so the torque wrench used for tightening can be specified. This permits traceability. * The ID can be set using special software downloaded for free from “Software” at the bottom of this page.
  • Battery life: Can be used approx. 150,000 times. One AAA alkaline battery should provide enough power for more than 150,000 operations. For example, even if the number of times is 3,600 per day, the battery can be used for at least two months. This reduces battery expense and the number of battery replacements.
  • The model features interchangeable heads, permitting a wide variety of tightening tasks using different heads, including open end, ring head, and ratchet head.
  • The CSPFHW series is compliant with ISO 6789:2017 starting January 2022. For more information, see the technical data “Initiatives for ISO 6789:2017” at the bottom of the screen.

Demonstration video

CSPFHW “Pokayoke” (error proofing) wireless pre-set torque wrench with double tightening detection


Model CSPFHW25N3 X 10D CSPFHW50N3 X 12D CSPFHW50N3 X 15D CSPFHW100N3 X 15D    
Torque range
Min ~ Max 5 ~ 25 10 ~ 50 20 ~ 100    
Hand force (P) at max. torque [N] 135 241 230 344    
Effective length L 186 208 218 291    
Overall length L’ 193 214 217 290    
Head Φd3 10 12 15    
Body m 19 25.5 28    
n 9.2 11.2 12.2    
Φd 15 20 21.7    
ΦD 29 34    
62 83.5 93.5 147.5    
Approx. weight[kg] 0.32 0.46 0.65    
            Accuracy ±3%    
Model CSPFHW140N3 X 15D CSPFHW200N3 X 19D CSPFHW280N3 X 22D      
Torque range
Min ~ Max 30 ~ 140 60 ~ 200 100 ~ 280      
Hand force (P) at max. torque [N] 401 450 425      
Effective length L 349.5 445 660      
Overall length L’ 348.5 429 627      
Head Φd3 15 19 22      
Body m 28 35      
n 12.2 15      
Φd 21.7 27.2      
ΦD 34 27      
169 251.5 336      
Approx. weight[kg] 0.75 1.24 1.66      
          Accuracy ±3%      
Model Transmitter      
Frequency 2.4 GHz band (2.402 ~ 2.479 GHz; 1 MHz intervals; 78 types)      
Communication method Spread spectrum (frequency hopping)      
Modulation method GFSK      
Modulation speed 1Mbps      
Group 256(000 ~ 255)      
ID 3 digits (000 ~ 999); 7 alphnumeric characters      
Power source DC1.5V(AAA alkaline battery)      
Antenna Chip antenna      
Operating temperature range 0 ~ 50℃ Less than 85%RH no condensation      
Transceiving distance Approx. 10 ~ 20 m (depends on radio wave environment)      
  • The CSPFHW conforms to wireless technical standards in Japan (TELEC), the U.S. (FCC), Canada (IC), the EU (CE), Thailand (NTC), Taiwan (NCC), South Korea (KC), India (WPC), Indonesia (SDPPI), Singapore (IMDA), and South Africa (ICASA). (Information valid as of July 2021.) However, certain restrictions apply regarding export procedures to Indonesia (SDPPI), so please check with Tohnichi for more information. Can also be used in China.

  • One R-CM receiver can communicate with a maximum of four torque devices, but it does not function with a mixture of new and old communication modes. (You can use the SB-FH2 setting controller to switch FHM and CSPFHW to the older communication mode).

  • The CSPFHW series is compliant with ISO 6789:2017 starting January 2022. Calibration Certificates will be different from older products.


Standard accessory
  • One AAA alkaline battery (for testing)

  • Protective cover FHW-PCV: 1



CSPFHW dimensional drawing

FHW transmitter component

◆ How to order

When ordering, please specify the body type and the set torque value.

Example 1: Tohnichi CSPFHW50N3X15DXT Free

Example 2: Tohnichi CSPFHW100N3X15DXT70N・m

Example 3: Tohnichi CSPFHW25N3X10DXT Free + R-FHSET-AC

* R-FHSET-AC is a set composed of the wireless module for FHM/FH, the R-CM receiver, and the BA-8R (AC adaptor).

[Example 4] Tohnichi CSPFHW25N3X10DXT Free + R-FHSET-AC

* The R-FHSET is a set composed of the wireless module for FHM/FH, and the R-CM receiver.

◆ Things to remember when ordering
  • The CSPFHW torque wrench is pre-set, so torque settings require a tester.

 When ordering, please specify the torque values you intend to apply.

  • Can also be mounted on models other than the CSP. Please contact us for details.

  • The group channel and ID are initially set when you place the order. To change them, the SB-FH2 setting controller (sold separately) is required.



Product Catalog

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Parts List

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Online Part Search System
How to Use
Features of TOHNICHI Torque Wrench

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Special Torque Wrench

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How to set torque

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Applying the correct force/Loosening tasks/Tightening left-handed bolts and screws

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[August 2022 Version] Tohnichi’s Torque Engineering Seminars yield positive results in the workplace right away.

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Technical Data
4. Tightening Reliability

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5. Selection of Tightening Tools

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6. Torque Tools are Measurement Equipment

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7. Maintenance for Torque Tools

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[August 2022 Version] Everything from torque controls to Tohnichi’s Tightening Guarantee System

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Initiatives for ISO 6789:2017

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