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A mark is made on the tightened cap screw and an adjacent location on your work. This lets you check for subsequent loosening. A marking torque wrench for tightening cap screws, which prevents human tightening errors.



Marking Example


  • Pokayoke (tightening error-proof)


  • Upon reaching the set torque the marker is designed to stamp on the bolt and work.
  • Because the stamped mark is put on the side of the bolt and the work piece, it can not only prevent missed tightening but also detect loosening of bolts.
  • The marker is designed to stamp only when the torque wrench operates upon reaching the set torque.
  • Marking stays on by use of quick dry ink.
  • One refill of ink is capable of approximately 3,000 times of stamping.
  • Marker is ink cartridge type.
  • Only hand force required for tightening a bolt and marking the bolt simultaneously.


Components: Torque wrench, hex wrench×2pc (1pc for spare), marker head, marker case, hex wrench adjusting tool, instruction manual


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