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NORD-LOCK WEDGE-LOCKING SOLUTIONS

NORD-LOCK WEDGE-LOCKING SOLUTIONS
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NORD-LOCK WEDGE-LOCKING SOLUTIONS

Product catalog summary
Introduction
Nord-Lock specializes in wedge-locking solutions to prevent bolt loosening, crucial for industries like oil and gas, railway, construction, and power generation. Their washers, developed in Sweden in 1982, utilize unique technology to secure bolted connections under severe vibration and dynamic loads.
Technology and Functionality
Nord-Lock washers feature a pair of washers with cams and serrations that prevent bolts from vibrating loose by increasing clamping load if rotation occurs. The wedge-locking effect is due to the cam angle being greater than the thread pitch, preventing rotational loosening.
Testing and Certification
The Junker test, a rigorous vibration test, highlights the superiority of Nord-Lock washers over friction-based solutions. These washers maintain preload and are certified by independent institutes, ensuring high quality and reliability.
Product Range
Nord-Lock offers various washers, including original, X-series, and SC-washers, each tailored for specific applications. The original washers handle severe vibration, the X-series adds a spring effect, and SC-washers are for steel construction.
Applications and Advantages
Used in heavy vehicles and construction, Nord-Lock washers offer high corrosion resistance, reusability, and a wide range of sizes and materials. They maintain high clamp force, reducing accident risk and improving efficiency.
Conclusion
Nord-Lock's dedication to quality and innovation ensures reliable and safe bolted connections across industries. Their products are globally available with full traceability, ensuring genuine and consistent quality.
Product Specifications and Quality Assurance
Nord-Lock washers offer high performance and reliability, with full traceability and a lifetime warranty. They comply with ISO standards and are RoHS, ELV, and Reach compliant, with certifications from DIBt, DNV GL, EBA, TÜV, and LR.
Engineering and Testing Expertise
Nord-Lock provides engineering services, including bolted joint calculations and verifications using methods like Finite Element Method and VDI 2230:2015. Their technical centers conduct advanced testing, including Junker tests and joint failure analysis.
Customer Support and Training
Nord-Lock offers on-site training, e-learning, seminars, and provides technical guides, user manuals, and CAD files. Tools like the Fastener Dimension Guide and Torquelator aid in precise calculations.
Applications and Market Segments
Nord-Lock washers are used in power generation, bridge building, railway, manufacturing, transport, oil & gas, and mining, valued for preventing bolt loosening and fatigue failure, reducing lifecycle costs and increasing uptime.
Product Range and Specifications
Nord-Lock offers washers in various materials and sizes, with key specifications including hardness, corrosion resistance, and temperature range. Available in steel and stainless steel, each material type suits specific applications.
Global Presence and Mission
Owned by Latour, Nord-Lock operates in over 65 countries with six production plants and technical centers, aiming to provide comprehensive bolting solutions and enhance safety across industries.
Overview
This document details specifications and dimensions for Nord-Lock washers, available in materials like stainless steel, 254 SMO®, Alloy C-276, and Alloy 718, each offering specific benefits for different environments.
Specifications
Washers are listed by bolt size, product designation, inner and outer diameters, thickness, weight per 100 pairs, and minimum package size, including metric and UNC sizes.
Materials and Properties
  • EN 1.4404 Stainless Steel: Suitable for environments without chlorides or acids, with low carbon content to prevent chromium-carbide precipitation.
  • 254 SMO®: Designed for high chloride environments and saltwater, offering resistance to pitting and crevice corrosion.
  • Alloy C-276: Provides extreme corrosion resistance, suitable for chemical plants and aggressive environments.
  • Alloy 718: Offers high yield, tensile, and creep-rupture properties at elevated temperatures, ideal for high-temperature applications.
Dimensional Tolerances
Specifies tolerances for inner and outer diameters and thickness for different washer series, ensuring precise fit and function.
Coatings and Corrosion Resistance
Washers are coated with Delta Protekt® KL100 zinc flake coating, providing significant corrosion resistance, withstanding up to 1,000 hours in salt spray tests.
Customization Options
Nord-Lock offers customization for washers, including coatings, dimensions, materials, and laser marking, to meet specific application needs.
Additional Resources
References online tools for torque guidelines and CAD models to assist in application and design processes.
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Catalog excerpts

NORD-LOCK WEDGE-LOCKING SOLUTIONS-1

NORD-LOCK GROUP NORD-LOCK WEDGE-LOCKING SOLUTIONS PREVENT BOLTS FROM LOOSENING

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-2

In the world of industry, where machinery, vehicles and equipment shape our civilization — details matter. Loosening bolts can lead to fatigue failure, unplanned downtime, production losses, significant maintenance or even injuries. Industries from oil and gas to railway, construction and power generation require a bolting solution that not only safeguard their people, projects and investments, but also equips them to go beyond the boundaries of everyday operations. Developed in Sweden, in 1982, Nord-Lock washers prevent bolted connections from loosening — even under the most severe vibration...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-3

This is one of the many billions of bolts that literally hold our modern society together. Due to its design, it has an unfortunate weakness. When it is exposed to vibration it can loosen. Nord-Lock products prevent bolts from coming loose. Engineering will always challenge physical laws. For your applications and designs, Nord-Lock wedge-locking technology offers you total safety. Because just like bolted joints, vibration is everywhere. NO MORE LOOSE BOLTS BRAND STORY I NORD-LOCK

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-4

NO MORE LOOSE BOLTS A pair of washers for maximum safety Nord-Lock bolt securing solutions consist of a pair of washers with cams facing each other and serrations gripping the mating surfaces. They use cam-geometry to effectively prevent the bolt from vibrating loose. Tension prevents bolts from rotating loose Think of the bolt as a spring. Turning the fastener during tightening stretches the bolt like a spring, creating the required clamp load to hold the parts together. Nord-Lock washers secure bolted joints by increasing this clamp load if the bolt tries to rotate loose. Cams Serrations Laser...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-5

AN APPROVED SOLUTION Tested and certified Nord-Lock washers are produced to the highest specifications and quality standards. They are rigorously tested throughout our production process and they have been approved by independent institutes as well as certification authorities. Nord-Lock washers are laser marked to ensure our customers receive genuine products and allows full traceability for every pair of washers. Scan QR-code to watch the Junker test High and consistent preload control The Junker test is the most severe vibration test for bolted joints. It is used to compare how different locking...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-6

WHEN FAILURE IS NOT AN OPTION ES SERVIC ING ER INE NG E SAFE BOLTED CONNECTIONS

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-7

ASSEMBLY CONTROL Preload in a bolted connection is crucial as this is what prevents parts in the assembly from opening and losing their function. Friction plays an important role in achieving the correct preload. Nord-Lock torque guidelines are based on the testing and evaluation of our products' friction value variations. Thanks to our modern in-house production, we provide consistent friction values. This ensures that you as our customer always achieve the correct preload. GRIP FUNCTION & WEDGE-LOCKING The wedge-locking function is activated when the two washers grip their respective mating...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-8

NORD-LOCK ORIGINAL WASHERS WIDE RANGE & MANY MATERIALS ORIGINAL WASHERS Nord-Lock original washers are recognized around the world for their ability to secure bolted joints exposed to severe vibration and dynamic loads. The washers increase operational reliability and lower your maintenance costs, while significantly reducing the risks of unplanned production stops, accidents and warranty claims. Applications Nord-Lock washers cannot loosen unintentionally as a wedge-effect is created underneath the bolt head/nut. Our extensive range includes washers in various materials and sizes. Nord-Lock...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-9

NORD-LOCK X-SERIES WASHERS ONE SOLUTION FOR MULTIPLE DESIGN CHALLENGES X-SERIES WASHERS Utilizing a unique multifunctional design, Nord-Lock X-series washers secure bolted joints against both spontaneous bolt loosening and slackening. Combining the unrivaled Nord-Lock wedge-effect with an exceptional spring effect, the X-series washers provide the extra level of security you need for applications that operate in extreme conditions. Nord-Lock X-series washers are the optimum choice when you are facing extreme challenges that require extra layers of protection. Nord-Lock X-series washers keep bolted...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-10

NORD-LOCK SC-WASHERS DESIGNED FOR STEEL CONSTRUCTION Nord-Lock steel construction (SC) washers are wedge-locking washers specially designed for use on steel construction applications and to fit HV/HR sets bolts and nuts in accordance to the European standard EN 14399-3/EN 14399-4/EN 14399-8. Nord-Lock SC-washers can easily replace a standard plain washer according to EN 14399-6, to prevent the bolt from rotating loose. The SC-washers are suitable for a wide variety of applications across the construction and bridge-building industry. They are safe to use with high-strength bolts and are confirmed...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-11

NORD-LOCK WHEEL NUTS SAFE WHEELS SAVE LIVES WHEEL NUTS Nord-Lock wheel nuts safely secure wheels on commercial vehicles by maintaining a high clamp force, even under extreme operating conditions. They represent a simple and cost-effective way to make wheels safe and secure for more productive and efficient operations. Nord-Lock wheel nuts are designed for flat-faced steel rims. Each nut is permanently attached to a pair of Nord-Lock wedge-locking washers. The wheel nut is suitable for: -- Improves driver productivity while reducing operating and service costs -- Heavy on-road vehicles (buses,...

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-12

CONSISTENCY IS WHAT SETS OUR WASHERS APART Our attention to detail ensures the products you receive are consistently excellent, so you can expect exceptional performance with every use. WHEN YOU’RE MOVING AT 320 KM/H, WE WON’T MOVE AT ALL

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NORD-LOCK WEDGE-LOCKING SOLUTIONS-13

Fast delivery We ship our standard range of washers globally. Nord-Lock products are supplied through distribution centers in North America, Europe and Asia, ensuring that they are available anytime, anywhere. Traceability All Nord-Lock washers are laser marked with the Nord-Lock brand name, control number and a type code. This ensures that all our customers receive genuine washers and allows full traceability down to the raw material charge at the steel mill. Nord-Lock washers are rigorously tested under extreme conditions and approved by independent institutes and certification authorities...

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All Nord-Lock International AB catalogs and technical brochures

  1. X series

    16  Pages

  2. Bolted Magazine

    20  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.