Nord-Lock Group Nord-Lock Combi Nuts

NORD-LOCK® COMBI NUTS

Expect simpler assembly, fewer errors, and optimized efficiency with our combi nuts, combining a nut with a pair of captivated Nord-Lock original washers.

How it works

THE DETAILED VIEW

Each combi nut combines a nut with a pair of captivated Nord-Lock Original washers, with cam faces on one side and serrations on the other. When tightened, the serrations embed into the mating surfaces. As the cam angle (α) is greater than the thread pitch (β), a wedge effect is created, preventing rotation and maintaining preload under vibration and dynamic loads.

The benefits awaiting you

Faster assembly

Reduced risk of incorrect assembly

Lower risk of parts coming loose

Easier disassembly and reassembly during maintenance

Less time required to maintain production

Cost savings through improved productivity

PRODUCT INFORMATION

Find out everything you need to know about our combi nuts, from material specifications to guidance on choosing the appropriate product for your application.

USER GUIDE

Nord-Lock combi nuts streamline the assembly process for securing bolted connections in numerous applications and situations.

DIMENSION GUIDE

Get accurate fastener data quickly and easily for your bolted joints calculation with our web-based dimension guide.

APPLICATIONS

Combi nuts are ideal when there is a lack of accessibility or when loose parts make assembling and maintenance difficult. The advantages of the combi nut will streamline production for any manufacturer using serial assembly.

Explore Nord-Lock washers today

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CERTIFIED PERFORMANCE

The Nord-Lock combi nuts are tested according to DIN 25201.

In safe hands

FULL TRACEABILITY

From the laser mark, trace your washers' origins to raw materials and production controls for that batch.

RIGOROUSLY TESTED

Tested under extreme conditions by independent institutes and extensively certified to meet any bolting challenge.

AVAILABILITY

Nord-Lock’s technical support and global distribution reaches every corner of the world.

CAD FILES

Download the CAD files you need for your Nord-Lock products, compatible with a variety of CAD software.

TORQUE information

Use our torquelator and guidelines to find the right torque and preload you need for your application.

MANUALS AND DOCUMENTS

Get any supportive documents you might need, from technical guides to user manuals.

Lifetime warranty

Discover the advantages of a lifetime warranty guaranteeing performance in every step of your bolting journey.

ADDITIONAL PRODUCT RANGE

For any industry or application where safe, reliable bolting is critical.

Nord-Lock wedge-locking washers prevent bolt loosening

Nord-Lock Group NORD-LOCK® WASHERS Wedge-locking security for bolted joints exposed 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 Group NORD-LOCK® X-SERIES WASHERS Maximum security for critical bolted joints exposed to spontaneous bolt loosening and slackening. Read more

Nord-Lock Group NORD-LOCK® STEEL CONSTRUCTION WASHERS Optimal contact between bolts and washers used in steel construction applications, including HV and HR sets. Read more

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