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This torque adapter delivers a factory preset tightening torque of 0.5 Nm with a tolerance of ±10% for at least 20,000 clicks. It clamps between any standard holding tool and a 4 mm C4 bit, making it ideal for precision fastening in electronics assembly, medical devices, and fine mechanics.

Torque Adapter 0.5 Nm for C4 Bits, 4 mm Hex, ±10% Tolerance - Bernstein 4-975

BERNSTEIN Original product
Net price (excl. VAT)
€24.30
Item BS-4-975
Manufacturer no. 4-975
Personal expert advice
Brand new Specialist dealer since 2009 Original product Worldwide shipping
Product data
Manufacturer no.4-975
EAN4250838525527
Customs tariff number82041100
ConditionNew
Article
BS-4-975

Fastening delicate components in electronics assembly demands exact torque control to protect both the part and the connection. The Bernstein 4-975 torque adapter is factory preset to 0.5 Nm and turns any standard holding tool with a 4 mm C4 bit into a precise torque tool.

Advantages

  • Preset tightening torque of 0.5 Nm with ±10% tolerance for at least 20,000 clicks
  • Audible click signals when torque is reached, overtightening is impossible
  • No torque release when loosening thanks to the locked core shaft, giving 30% higher loosening torque without extra tools
  • Compact design with an 8 mm adapter diameter and 32 mm overall length for tight spaces
  • Factory certificate available on request for quality assurance

Technical Data

FeatureValue
Tightening torque0.5 Nm / 5,1 Kgfcm / 4,4 in-lb
Tolerance±10% (factory certificate on request)
Click lifeat least 20,000 clicks
Bit magnetic holder4.0 mm hexagon (factory standard)
Drivehex shank 4.0 mm (factory standard)
Materialalloyed steel
Adapter diameter8 mm
Adapter length22.0 mm (without shank)
Overall length32 mm
Weight7.5 g

Application

The adapter is designed for manual use at the workbench as well as in quick-change systems and robotic stations. When used with power tools, Bernstein recommends a maximum speed of 100 rpm with minimal click repetition, typical fields include electronics assembly, aerospace, and medical technology.

Standards and Delivery Data

  • Tested to DIN EN ISO 6789 for manually operated torque screwdriving tools
  • EAN 4250838525527
  • Customs tariff number 82041100
  • Country of origin Taiwan
More Information
ESD versionTEC
Manufacturer Nr.4-975
ManufacturerBernstein
EAN4250838525527
Weight0.007500
HS-Code82041100
GPSR manufacturer informationBERNSTEIN Werkzeugfabrik Industriehof Trecknase 1 DE-42897 Remscheid www.bernstein-werkzeuge.de
Article authenticityOriginal product
Condition of articleNew
Position sensingNo
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