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Torque Adapter 4.0 Nm for 1/4 Inch Bits with Magnetic Bit Holder 6.35 mm - Bernstein 4-987

Bernstein ✓ Original product Brand new Made in Taiwan

This torque adapter delivers a preset tightening torque of 4.0 Nm with a tolerance of ±10% for at least 20,000 clicks. Clamped between a standard holding tool and a 1/4 inch bit, it is suited for housing screws and assemblies in electronics manufacturing.

Net
€24.30
excl. VAT
Item BS-4-987
Manufacturer no. 4-987
Question about this item
  • Specialist dealer since 2009
  • Invoice payment for regular customers
  • Worldwide shipping
  • Technical questions clarified with the manufacturer

Description

Anyone tightening housing screws, assemblies, and medium-strength fasteners in electronics and equipment manufacturing to an exact torque value does not need a dedicated torque wrench: this adapter turns a standard 1/4 inch bit holding tool into a precise torque tool with a fixed preset value of 4.0 Nm.

Advantages

  • Preset tightening torque of 4.0 Nm with a tolerance of ±10% for at least 20,000 clicks
  • Clear click signal once the torque is reached, so the screw cannot be overtightened
  • No torque release when loosening, giving up to 30% higher torque without an extra loosening tool
  • Magnetic bit holder, 1/4 inch hexagon 6.35 mm to DIN 3126, for a secure bit fit
  • Compact design with a 12 mm adapter diameter and an overall length of 38.3 mm

Application

The adapter is used wherever an exact torque is required without a separate torque wrench, for example on housing screws, assemblies, and medium-strength fasteners in electronics and equipment manufacturing. Typical settings include quick-change systems, robotic stations, aerospace, medical technology, and any workbench in electronics manufacturing. The adapter is primarily intended for manual operation. When used with a power tool, a maximum speed of 100 rpm with minimal click repetition is recommended.

Standards and Delivery Data

  • Tested to DIN EN ISO 6789 (manually operated torque screwdriving tools)
  • Bit holder and drive to DIN 3126
  • EAN 4250838529891
  • Customs tariff number 82041100
  • Country of origin Taiwan

Technical data

FeatureValue
Tightening torque4.0 Nm / 40.8 Kgfcm / 35.4 in-lb
Tolerance±10% (from at least 20,000 clicks, factory certificate on request)
Bit holder1/4 inch hexagon 6.35 mm, magnetic (DIN 3126)
Drive1/4 inch hex shank 6.35 mm (DIN 3126)
Materialalloyed steel
Adapter diameter12 mm
Adapter length28.3 mm (without shank)
Overall length38.3 mm
Weight21 g
ManufacturerBernstein
Manufacturer Nr.4-987
EAN4250838529891
HS-Code82041100
GPSR manufacturer informationBERNSTEIN Werkzeugfabrik Industriehof Trecknase 1 DE-42897 Remscheid www.bernstein-werkzeuge.de
Condition of articleNew
Article authenticityOriginal product
NormDIN 3126, DIN EN ISO 6789

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