Washers compatible with high-strength bolts for construction used in steel structures and bridges in Europe!
The product is a Nord-Lock washer specifically designed for high-strength bolts used in construction, easily replaceable with flat washers as specified in EN 14399-6. It is widely used in structural steelwork and bridge construction in many countries where European standards apply, physically preventing bolt loosening caused by vibrations from vehicle traffic and other sources. The chamfer treatment on the inner diameter is applied to both sides of the two-piece set, eliminating the risk of incorrect assembly orientation. 【Features】 ■ Physically prevents rotational loosening in steel structures ■ Product design specialized for HV or HR sets and CE marked ■ Allows for a highly reliable fastening design even with short fastening lengths ■ Provides the same effect regardless of the skill or experience of the operator ■ Usable in a wide temperature range from -50°C to 150°C *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 ■Corrosion resistance rating of C4 High or C5 Medium in ISO 12944-6, achieved through a minimum of 1,000 hours of corrosion resistance in salt spray testing compliant with ISO 9227. ■Since it does not rely on friction, lubricants can be used at the fastening points. *For more details, please refer to the PDF document or feel free to contact us.
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【Purpose】 ■ Construction of structures and bridges using steel frames *For more details, please refer to the PDF document or feel free to contact us.
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Nortlock Japan Co., Ltd. aims to be a partner in solving all bolt fastening challenges, centered around four brands: the "Nortlock Washer," a locking mechanism that does not rely on friction and prevents loosening; the "Superbolt," which allows enormous bolts and nuts that cannot be tightened by hand to be tightened with just one torque wrench; the "Boltight," which can simultaneously tighten multiple large-diameter bolts with uniform pressure; and the "Expander," a pivot pin for construction and heavy machinery that can be used semi-permanently.