Numerous achievements in all industries! Wedge lock products that physically prevent bolt loosening.
The "Nortlock Washer" employs a "wedge lock mechanism" and is a loosening prevention product that does not rely on friction. It protects bolt connections from loosening even in the most severe vibration environments, ensuring solid safety. It is used in various bolt connections in the railway industry worldwide, including bogies, couplers, brake systems, equipment, track maintenance, and sleepers. Its high quality and safety have been recognized, and it has been registered in the database "NETIS" (New Technology Information Sharing System) operated by the Ministry of Land, Infrastructure, Transport and Tourism. (Registration number: KKK-190002-A) 【Features】 ■ Loosening prevention that does not rely on friction ■ Wedge lock mechanism ■ Many approvals and certifications, primarily in Europe ■ Sizes (Steel): M3 to M130 ■ Sizes (SUS): M3 to 80 *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Examples of Railway Vehicle Adoption (Excerpt)】 ■ Tōkaidō Shinkansen N700 Series ■ Irish Rail Bogie Axle Box ■ Automatic Doors at Boarding and Alighting Areas and Surrounding Equipment ■ Deutsche Bahn Cargo Train Pantograph ■ High-Speed Rail Large Diameter Bolts for Vehicle Coupling ■ Austria VAE High-Speed Switch ■ Rail Fastening Devices, Joint Plates, Sensors, etc. *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applications】 ■Vehicles ■Track maintenance ■Civil engineering and facilities *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.