Bernstein Werkzeuge
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bit set 47 pcs with torque adapter 0.5 + 0.6 Nm

  • content: article listing see below
  • including all important bit sizes, one 1/4 inch to 4 mm bit adapter, one dissipative ESD handle and a 110 mm extension
  • preset torque, tolerance +/-10% (+/-6% on request), accurate and accurate for 20,000 clicks
  • adapter Ø 8 mm, length 22 mm (without shank). In combination with power-tool max. speed 100 rpm.
  • hex shank 4.0 mm, magnet bit holder 4.0 mm
  • material stainless steel and high-quality tool steel
  • extension made of aluminum with 4 mm bit holder, ESD-handle (10^6 - 10^9 ohm)
  • in plastic case with foam insert
  • measures 175 x 160 x 45 mm
  • weight 410 g
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Area of application

These torque adapters are suitable for particularly small torques. The torque value is preset in the adapter and can be clamped between any commercially available holding tool and a 4 mm bit. This turns any bit holder into a torque screwdriver, for example for working on watches, circuit boards, drones, consumer electronics, smart phones, tablets, PCs or other communication devices.

Technical description

Precise and accurate, for 20,000 clicks. Adapters are mainly suitable for manual operation. In conjunction with power-tool we recommend max. a speed of 100 rpm, with minimal click repetition. Higher speed as special model on request.

General information

Turn your bits and a holder into a perfect torque tool. Convenient to combine with pre-set torque for tightening or loosening. These high-precision fine tools are available from 0.1 to 0.7 Nm and are used in combination with 4 mm bits. They are often used as a complete solution for work on electronic equipment, in quick-change systems, robotic stations, aerospace, medical or just about any workbench where precise torque is needed. The click sound indicates when torque is reached, so the adapter cannot be overtorqued. No torque is released when loosening screws (due to the locked core shaft), so no additional loosening tool is required.


Bit set with torque adapter consists of:

  • 6-340-3 ESD screwdriver bit set 42 pcs 4 bit bars 4mm (5/32 inch) hex bits
  • 6-340-2 bit extension for 4mm (5/32 inch) hex bits
  • 6-340-1 ESD bit holder dissipative for 4mm (5/32 inch) hex bits
  • 4-564 bit Adapter 1/4 to 4mm bits, length 42,5mm
  • 4-975 torque adapter 0.5Nm for 4mm bits
  • 4-976 torque adapter 0.6Nm for 4mm bits