Torque Adapter 0.3 Nm Narrow Version for 1/4 Inch Bits - Bernstein 4-991-03

Anyone turning a standard 1/4 inch bit into a precise torque tool fits the torque adapter 4-991-03 between the holder and the bit. It is factory preset to 0.3 Nm and holds that value for at least 20,000 clicks with a tolerance of +/-10%.

Advantages

• Overtightening is impossible, the click sound reliably signals 0.3 Nm
• Fixed preset for at least 20,000 clicks at +/-10% tolerance, factory certificate on request
• No torque unlocking when loosening, giving 30% higher breakaway torque without extra tools
• Compact design with 34.5 mm overall length and 10 (narrow version) mm adapter diameter
• Bit magnetic holder 1/4 inch hexagon 6.35 mm (DIN 3126) for fast bit changes

Application

For work on electronic equipment, in quick-change systems, robotic stations, aerospace and medical technology wherever an exact tightening torque of 0.3 Nm is required, such as tightening fine electronic screws. With power tools, Bernstein recommends max. 100 rpm and minimum click repetition.

Standards and Supply Data

• Tested to DIN EN ISO 6789 (manually operated torque screwdriving tools)
• EAN 4250838533959
• Customs tariff number 82041100
• Country of origin Taiwan