Torque screwdriver with over-torque prevention rotary-slip mechanism for various applications from mass production to maintenance work.

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“RTD” Rotary Slip Adjustable Torque Screwdriver

RTD120CN [Overall length 130 mm]
RTD60CN [Overall length 110 mm]

Locker shape for rolling prevention
RTD500CN with auxiliary tightening tool (sold separately)
The RTD series is equipped with Tohnichi’s own toggle mechanism for torque control.


  • Used for various kinds of tightening operation from mass production to maintenance work.


  • Rotary slip style.
  • RTD is designed to ratchet freely after reaching the set torque to prevent applying over-torque.
  • Toggle clutch torque detection mechanism for enhanced durability.
  • Easy torque adjustment with scale.
  • All models include the locking mechanism which prevents changing of torque during use.
  • Hexagonal locker prevents driver from rolling and locker can be replaced with new one.
  • Counterclockwise tightening model available upon request. Please contact us.


Standard accessory
  • Hook spanner for RTD260CN and RTD500CN
  • Resin grip (for RTD120CN and RTD260CN only) supplied as standard accessory.

  • Auxiliary tightening tool for RTD500CN can be attached (sold separately).
  • Bits are sold separately.



Interchangeable Bit

For Torque Screwdriver


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