Your Torque Partner Since 1949

New Products
Ratchet head QH6D (accessory) connected to CES5NX6D
CES, Small Capacity Digital Torque Wrench
CSP6N Preset Torque Wrench
CSP6D Series Low Range Torque Wrench and Small Heads
DOTE10N4-G, Low Range Digital Torque Wrench Tester
Join us at the Assembly Show – Booth #557
The Assembly Show - Oct 24-26 2023 - Rosemont IL
error proofing

error proofing product 1 error proofing product 2 error proofing product 3 error proofing product 4 error proofing product 5 error proofing product 6

Count Clicks • Prevent Over Torque • Verify Manual Tightening • Mark Fasteners • Detect Double Tightening

Torque Handbook Vol. 10 (2024)

Tohnichi Torque Handbook

  • Torque Theory and Technical Guides
  • Maintenance and Usage
  • Product Specifications

Request Yours Now


The history of Tohnichi’s 70+ years is the history of torque tools in Japan.

Tohnichi Manufacturing was established in 1949. In that period when the idea of quality control had not yet taken root in the manufacturing industry in Japan, Tohnichi focused on the importance of screw tightening control and developed the country’s first torque wrench.

The control of torque is fundamental for quality control in various industries, particularly the automobile industry, and over the following 70+ years Tohnichi has developed as the leading company for torque products.

Tohnichi Services

Tohnichi tools are built to last through years of rigorous industrial use, and even longer with periodic maintenance.

We will guide you in selecting the proper tools to fit your needs. From torque product demonstration to technical support, along with calibrations and repairs – we’re here to maximize your benefits when you choose Tohnichi for your torque tool needs.

Tohnichi America
Pre Sales Services

  • Open Showroom & Torque Lab
  • Product Application Assistance
  • Demonstrations
  • Learning Seminars
  • Specials Drawing & Technical Assistance
  • Site Surveys & Recommendations
  • Product Videos
  • Torque information
  • Authorized Dealer Network for Canada, USA, Mexico, Central & South America 
  • Satellite Office: Georgia
After Sales Services

  • Repair and Parts Support
  • Calibration & Torque Set Services
  • On Site Training and Set up Assistance
  • Customized Repair Training
  • Technical Support & Troubleshooting Assistance
  • Multi Language Operation Manuals & Support Materials
  • Remote Video Training & Support
Tohnichi Mfg Co Ltd
Product Services

  • Research and Development System
  • Durability Studies
  • Torque Measurement Studies
  • Studies on Screw Tightening Reliability
  • Custom Products
  • Specialty Heads
  • Torque Software Solutions
  • Product improvement programs
Worldwide Services

  • International Subsidiaries
  • Europe/China/USA
  • Worldwide Authorized Dealer Network
  • Premier Brand
  • Seminars & Factory Tours
  • Technical Laboratory & Showroom
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