Nord-Lock SC-washers are fasteners for steel constructions that can be used with HV/HR series bolts and nuts (in accordance with the European standard EN 14399-4 / EN14399-3). Nord-Lock SC-washers have received CE conformity for use with HV bolts, but its design is also suitable for use with HR bolts.
This user manual provides instructions for installing Nord-Lock SC-washers in steel construction applications. It covers assembly procedures, torque values, material specifications, and compatibility with HV/HR bolt systems. The washers use a wedge effect to prevent bolt loosening under vibration and dynamic loads.
The manual includes technical data such as dimensions, hardness, and torque guidelines for different sizes (M12 to M36). It also explains how to reuse the washers and notes that the Lifetime Warranty does not apply during reuse. Each washer batch is traceable via a unique control number.
| Material | Steel 1.7182 or equivalent |
|---|---|
| Hardness | HV1 > 465 |
| Surface Coating | Zinc flake coated free of cadmium + chrome VI |
| Torque Method | Modified torque method or combined method (torque + angle) |
They use a wedge effect created by cams with an angle greater than the thread pitch, preventing rotation.
Yes, but only if visually inspected for defects and installed in pairs, cam face to cam face. The Lifetime Warranty does not apply during reuse.
They are designed for use with HV/HR bolt sets in accordance with European standard EN 14399-4 / EN14399-3.