Steel Construction Washers

Nord-Lock Group About Nord-Lock Products Steel Construction Washers
Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.

Steel Construction Washers

Nord-Lock steel construction (SC) washers are specially designed to fit HV- and HR-assemblies, and directly replace standard plain chamfered washers (EN 14399-6).

In order to ensure an optimal contact surface between the bolt and the washer, each SC-washer pair has chamfers on the inner diameter. Since the chamfer is present on both sides of each pair, it eliminates the risk of incorrect installation of the washer.

Nord-Lock steel construction washer promises the highest corrosion resistance in the market, it is tested at least 1,000 hours in the Neutral Salt Spray Test.

Washer Specifications

Material Steel 1.7182 or equivalent
Hardness HV1 > 465 HV through hardened
Surface coating Zinc flake coated free of cadmium + chrome VI
Available range M12 – M36 (NL12SC – NL36SC)

 

Advantages

  • Prevents loosening caused by vibration and dynamic loads
  • Quick to install and remove using standard tools
  • Locking function not affected by lubrication
  • Defined and uniform friction condition, which results in less deviation of achieved preload
  • Same temperature characteristics as standard bolt / nut
  • Reusable
  • High corrosion resistance
  • Reliable locking, even for joints with short clamp length

Testing & Certification

Nord-Lock SC-washers have been rigorously tested and approved by independent institutes as well as certification authorities. They are CE-marked for use with HV sets. Their safe usage with high strength bolts has also been confirmed by the National Technical Approval No. Z-14.4-629 and by the European Technical Approval ETA-13/0246 issued by DIBT.

More insights and references

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Solutions for your industry

Construction
Machine Building
Manufacturing & Processing
Steel, Forging & Other Presses
Miscellaneous

Nord-Lock product range

Nord-Lock wedge-locking washers prevent bolt loosening Nord-Lock Washers Wedge-locking security for bolted joints subjected to extreme vibration and dynamic loads Read More
Nord-Lock X-series washer combines wedge-locking with an exceptional spring effect to secure against multiple bolt loosening factors Nord-Lock X-series Washers Maximum security for critical bolted joints exposed to spontaneous bolt loosening and slackening Read More
Nord-Lock steel construction washers are designed for bolted connections in steel structures Nord-Lock Steel Construction Washers Optimal contact between bolts and washers used in steel contruction applications, including HV and HR sets Read More
Nord-Lock wheel nuts safely secure wheels on on-road and off-road heavy vehicles Nord-Lock Wheel Nuts High clamping force that eliminates wheel loosening on heavy vehicles operating under extreme conditions Read More
Combi bolt washers from Nord-Lock are specifically designed to be captivated on a bolt, known as SEMS Nord-Lock Combi Bolt Washers Additional layer of security for applications through permanent attachment to bolt (SEMS) Read More
Customized washers from Nord-Lock can include special materials, measurements, sizes, coatings or changes in geometry Nord-Lock Customized Solutions Custom designed bolting solutions for your unique application requirements Read More

Secure connections

Looking for the right solutions for your bolting needs?

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