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  4. Wedge locking washer Iron (steel) washer (Nord-Lock Group)
Wedge locking washer Iron (steel) washer-NL3
Wedge locking washer Iron (steel) washer-Nord-Lock Group

Wedge locking washer Iron (steel) washer
Nord-Lock Group

About This Product

■Summary

Nord-Lock washers, which feature a wedge locking mechanism, use axial force rather than friction to physically prevent bolt connections from loosening. Nord-Lock washers greatly reduce the risk of loss due to unexpected production stoppages, accidents, warranty claims, etc., contributing to improved production efficiency and reduced maintenance costs.

■Product structure

When the bolt is tightened, the serrations grip and secure the mating material. When a loosening force is applied, the cam angle α is larger than the screw lead angle β, so the washer becomes thicker and pulls up the bolt head, conversely increasing the axial force. Physically prevents rotational loosening by using the axial force itself.

■Advantages of using Nord-Lock washers

・Prevents bolts from loosening even in environments exposed to severe vibrations and fluctuating loads ・Material that can withstand corrosive, acidic, and high-temperature environments ・Lock function not affected by lubricating oil ・Accurate axial force due to clear and uniform friction - Wide range of metric and imperial sizes ・High corrosion resistance ・Reusable ・Customized size ・Improve operational reliability and reduce maintenance costs ・Reducing the risk of downtime and accidents

■Applications

Nord-Lock wedge locking washers use axial force instead of friction to secure bolt connections that are exposed to severe vibrations and fluctuating loads. Throughout their lifecycle, Nord-Lock washers improve operational reliability and reduce maintenance costs, significantly reducing the risk of production stoppages, accidents, and warranty claims. Nord-Lock washers are used everywhere from the deep sea to outer space and bridges, where safety is a must.

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    Wedge locking washer Iron (steel) washer

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1 Models of Wedge locking washer Iron (steel) washer

Image Part Number Price (excluding tax) Approximate weight per 100 pairs (kg) Coating Size range Bolt size (inch) Bolt size (meter) Bolt strength classification Laser mark marking material name Inner diameter Φi (mm) Thickness T (mm) Outer diameter Φo (mm) Compatible temperature range Quantity in small box (sets) Material standards Hardening Surface treatment Purpose Hardness Corrosion resistance
Wedge locking washer Iron (steel) washer-Part Number-NL3

NL3

Available upon quote

0.03

Delta Protect® KL100
zinc flake coat

M3 to M130
#5 to 5

#5

M3

Until 12.9

FlZn

3.4

1.8

7

-50℃ ~200℃

200

EN 1.7182

Whole hardening

General fastening parts of iron materials

≥465HV1

ISO9227 compliant
In salt spray test
At least 1,000 hours

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About Company Handling This Product

Nord-Lock Group

Company Overview

Nord-Lock Group, established in 1982 and headquartered in Sandviken, Sweden, is a manufacturer and supplier of...

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  • Sweden

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Metal Washers
Metal Washers　Nord-Lock Group
Nord-Lock Group

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