Torque conversion

AMRD / BMRD Adjustable Type Torque Screwdriver

RoHS Assembly Adjustable Rotary Slip Graduation


  • Adjustable Torque Screwdriver for precision tightening of small screws (M1-M2).
  • Easily set torque by twisting body to select torque value
  • Rotary slip mechanism prevents over-torque.
    • User will sense and hear "click" at set torque and should stop turning. If user continues, the rotary slip mechanism will ratchet the driver without applying more torque.
  • Tohnichi's toggle clutch torque mechanism creates enhanced durability and reliability
  • Index finger holding feature allows the operator to tighten with precise movements.
  • Tohnichi bit set included for AMRD models. BMRD accepts standard 1/4" hex root bits (sold separately)
  • Included Certificate of Calibration
  • Counterclockwise tightening model available upon request.
  • Applicable for international use including the EU region. Compliant with calibration procedures of ISO 6789 Type II Class D.
torque animation The AMRD series is equipped with Tohnichi’s own toggle mechanism for torque control.

Standard accessories

AMRD bits are included as standard accessories.


product dimensions AMRD 1CN~8CN product dimensions BMRD15CN2, 30CN2