Prevent both types of loosening simultaneously! We offer both standard and wide types for the outer diameter!
We would like to introduce our "Nord-Lock X Series Washers." This product can prevent both "rotational loosening," which occurs due to reverse rotation, and "non-rotational loosening," which does not involve reverse rotation due to thermal expansion and contraction or surface dents, all with a single product thanks to our unique product technology. By incorporating a disc spring shape into the wedge lock technology in the product design, we can also prevent the loss of axial force caused by "settling," which inevitably occurs in metal-to-metal fastening, thereby protecting the fastening joint at an even higher level. 【Features】 ■ Simultaneously addresses two types of loosening with a single solution ■ Enables a highly reliable fastening joint design even with short fastening lengths ■ Stable friction coefficient due to unique technology ■ Simply tighten by passing through the bolt axis to complete the work ■ Leads to significant reductions in workload and time *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Other Features】 ■ Corrosion resistance of at least 1,000 hours in salt spray testing in accordance with ISO 9227 ■ Consistent effectiveness regardless of the skill or experience of the operator ■ Unchanging locking effect regardless of the magnitude of residual axial force ■ Does not damage or impose load on bolts, maintaining reusability ■ Can be removed with torque below the tightening torque, reducing work time and load ■ Reusable *For more details, please refer to the PDF materials or feel free to contact us.
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Applications/Examples of results
【Applications (Excerpt)】 ■ Prevention of axial force loss due to expansion and contraction caused by heat ■ Prevention of axial force loss due to the sinking of the coating or paint on the counterpart base material *For more details, please refer to the PDF document or feel free to contact us.
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Company information
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.
![[Nortlock Product Adoption Case] Mitsui Engineering & Shipbuilding Co., Ltd.](https://image.www.ipros.com/public/product/image/a44/2000598315/IPROS11347907448342775236.png?w=280&h=280)
