Nord-Lock Locking Washer
Nord-Lock Locking Washer
Nord-Lock Locking Washer Drawing
Nord-Lock Locking Washer Drawing


Nord-Lock Washers for Nuts - DIN 25201 slide 1
Nord-Lock Washers for Nuts - DIN 25201 slide 2

Nord-Lock Washers for Nuts - DIN 25201

Nord-Lock Washers prevent nuts and bolts from becoming loose because of vibration or dynamic load. They have a wedge-locking action which uses tension rather than friction. They can only be used in conjunction with a conventional bolt. The rise of the cams between the Nord-Lock Locking Washers is greater than the pitch of the bolt. In addition, there are radial teeth on the opposite side.

The locking washers are supplied and installed in pairs - cam face to cam face. When the bolt/nut is tightened, the teeth grip and seat onto the mating surfaces. The washers lock in place, allowing movement only across the face of the cams. Any tendency for the bolt/nut to loosen is blocked by the wedge effect of the cams. This positively locks the fastener even when it is subjected to vibration or dynamic loads.

Nord-Lock Locking Washers have a high corrosion resistance and can be reused up to 5 times.
They are available in in thread sizes from M3 to M42 and diameters from 7mm to 63mm and they meet the DIN25201 standard.

• Resist loosening caused by vibration or movement
• Ease of assembly and disassembly
• Locking function is not lost by lubrication
• Positive locking at low and high preload levels
• Same temperature characteristics as standard bolt/nut
• Reusable up to 5 times

Typical applications:
Construction equipment, Automotive and Trucking industry, Agricultural equipment, Utilities, Manufacturing Equipment, Railroad equipment, Process industries

Material - Available in Steel and Stainless Steel

Are you looking for further information, samples, CAD files or prices?

Please contact our customer service team or use the "Request Samples" button next to the product variations below.

Drawings and images are for reference only and should not be used for product specification. For new applications we recommend that you carry out assembly tests using samples supplied by us.

Dimension guide

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Download Dimension Guide
Nord lock washers for nuts dimensional linedrawing guide showcasing the thread clearance

Product Variations

Code Description Thread Diameter
NLW001 LOCKING WASHER M3 7.0 Request Free Samples
NLW002 LOCKING WASHER M3.5 7.6 Request Free Samples
NLW003 LOCKING WASHER M4 9.0 Request Free Samples
NLW004 LOCKING WASHER M4 9.0 Request Free Samples
NLW005 LOCKING WASHER M5 9.0 Request Free Samples
NLW006 LOCKING WASHER M5 10.8 Request Free Samples
NLW007 LOCKING WASHER M6 10.8 Request Free Samples
NLW008 LOCKING WASHER M6 13.5 Request Free Samples
NLW009 LOCKING WASHER M8 13.5 Request Free Samples
NLW010 LOCKING WASHER M8 16.6 Request Free Samples
NLW011 LOCKING WASHER M10 16.6 Request Free Samples
NLW012 LOCKING WASHER M10 21.0 Request Free Samples
NLW013 LOCKING WASHER M11 18.5 Request Free Samples
NLW014 LOCKING WASHER M12 19.5 Request Free Samples
NLW015 LOCKING WASHER M12 25.4 Request Free Samples
NLW016 LOCKING WASHER M14 23.0 Request Free Samples
NLW017 LOCKING WASHER M14 30.7 Request Free Samples
NLW018 LOCKING WASHER M16 29.0 Request Free Samples
NLW019 LOCKING WASHER M16 30.7 Request Free Samples
NLW020 LOCKING WASHER M18 29.0 Request Free Samples
NLW021 LOCKING WASHER M18 34.5 Request Free Samples
NLW022 LOCKING WASHER M20 30.7 Request Free Samples
NLW023 LOCKING WASHER M20 39.0 Request Free Samples
NLW024 LOCKING WASHER M22 34.5 Request Free Samples
NLW025 LOCKING WASHER M22 42.0 Request Free Samples
NLW026 LOCKING WASHER M24 39.0 Request Free Samples
NLW027 LOCKING WASHER M24 48.5 Request Free Samples
NLW028 LOCKING WASHER M27 42.0 Request Free Samples
NLW029 LOCKING WASHER M27 48.5 Request Free Samples
NLW030 LOCKING WASHER M30 47.0 Request Free Samples
NLW031 LOCKING WASHER M33 48.5 Request Free Samples
NLW032 LOCKING WASHER M36 55.0 Request Free Samples
NLW033 LOCKING WASHER M39 58.5 Request Free Samples
NLW034 LOCKING WASHER M42 63.0 Request Free Samples

All dimensions are mm unless specified.

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