Images similar. Errors and technical changes reserved.


Torque adapter set 9 pcs 0.1 to 0.6 Nm for 4 mm bits +bit adapter +handle

  • Content: see parts list
  • Preset torque, tolerance +/-10%
  • Adapter Ø 8 mm, length 22 mm (without shank)
  • Hex shank 1/4 inch
    In combination with power-tool max. speed 100 rpm.
  • Bit magnetic holder 4.0 mm
  • Material alloyed steel HRC 43-48
  • Plus 2 pieces of bit adapter 1/4 inch to 4 mm in plastic quadro-box
  • 1-bit aluminum holder, 1-bit steel holder chromed
  • In plastic quadro box (91x43x15mm)
  • Weight 108 g

Area of application

Turn your 4mm C4 bit and a holder into your perfect torque tool. These small torque values are preset in the adapter and can be clamped between any standard holding tool and a bit. The click sound indicates when the torque is reached. The adapter cannot be overtightened. When loosening the screw, there is no torque unlocking (due to the blocked core shaft), thus no additional loosening tool is required (30% higher torque when loosening). The adapter is primarily suitable for manual operation. In conjunction with power tools, we recommend a max. speed of 100 rpm, with minimum click repetition.

Technical description

The adapters are tested according to DIN EN ISO 6789 (manually operated torque screwdriving tools) and have a tolerance of ± 10% for at least 20,000 clicks. The torque value should be checked regularly by the user via a torque meter. The adapter functions by locking the ratchet, the torque in the bushing sleeve. The patented system also consists of a hollow shaft and a damping cylinder. The core shaft is able to move the mobile ratchet. The damping cylinder has a slot to allow the spacer sleeve to slide on the core shaft. When the applied torque exceeds the preset torque, the core shaft becomes inactive. This means that when the torque requirement is reached, the continuous tension is no longer increased, so also on the screw to be tightened.

General information

Torque adapters 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 wherever accurate torque is needed.


Torque adapter set consists of:

  • 4-971 torque adapter 0.1Nm for 4 mm bits
  • 4-972 torque adapter 0.2Nm for 4 mm bits
  • 4-973 torque adapter 0.3Nm for 4 mm bits
  • 4-974 torque adapter 0.4Nm for 4 mm bits
  • 4-975 torque adapter 0.5Nm for 4 mm bits
  • 4-976 torque adapter 0.6Nm for 4 mm bits
  • 4-564 bit Adapter 1/4 to 4 mm bits, length 42,5 mm
  • 4-566 bit Adapter 1/4 to 4 mm bits, length 25 mm