Washers brochure - Product Information (Metric) - 4 / 16 Pages

Widely used &
globally approved

Nord-Lock washers are high end products with documented
success in many industries. Our washers are approved
by several industry standards and specified by numerous
international companies.
Industries where Nord-Lock washers are used
Nord-Lock washers are used in industries such as: energy,
transportation, offshore, mining and quarrying, construction
and bridge building, manufacturing and processing, ship
building, forestry and agriculture, heavy vehicles, and
military. The number of industries that use Nord-Lock
washers is continuously growing.

Nord-Lock washers are rigorously tested in all steps of
production to verify that the quality requirements are met.
Each batch is assigned a control number which ensures
full traceability and confirms that the washer is a genuine
Nord-Lock article. The control number is printed on the
package as well as on every washer pair, enabling full
traceability down to first assembly – even when using bin
systems for fastener supply.

Often joints do not start to loosen until an application is
in regular use, therefore Nord-Lock washers are commonly
retrofitted during maintenance, repair and overhaul
Certificates & approvals
The most prominent of our certificates are:
• AbP (Allgemein bauaufsichtliches
• DIBt (Deutsches Institut für
• DNV (Det Norske Veritas)
• EBA (Eisenbahn-Bundesamt)
• TÜV (Technischer Überwachungs-Verein)
Quality & environmental assurance
• ISO 9001
• ISO 14001
• Licensed by Dörken to perform Delta Protekt®
surface coating in-house
• RoHs, ELV and Reach compliant
• Full traceability
For more information or a complete list of certificates and
approvals, please visit our website or contact your nearest
Nord-Lock representative.


In 2011 we began to laser mark our products with the Nord-Lock
brand name, the control number and a type code for increased
traceability and to facilitate authentication.

Laser marking, type code table
Washer type


Steel washers, Delta Protekt coating
Stainless steel washers
254 SMO ®


Washers brochure - Product Information (Metric)
  1. P. 1

    ENGLISH • UNCNord-Lock washersProduct information
  2. P. 2

    The provenoriginalSince the Nord-Lock Group began operations in 1982 wehave focused on providing the world’s most effective boltsecuring systems....
  3. P. 3

    Over the years, Nord-Lock washers have been rigorously tested and approved by independentinstitutes as well as certification authorities.Proven in Junker...
  4. P. 4

  5. P. 5

    The key to efficient& secure operationsNord-Lock washers provide more than just a safe lockingfunction, using our washers also improves the generalperformance...
  6. P. 6

    Using Nord-LockwashersNord-Lock washers are easy and effective to use whileensuring structural security for applications exposed tovibration and dynamic...
  7. P. 7

    Nord-Lock washer material / type guideApplicationparameterSteelwashersStainless steel (ss)washers254 SMO ®washersINCONEL® /HASTELLOY® C-276...
  8. P. 8

    Nord-Lock steel washersEN 1.7182 or equivalent, zinc flake coating (Delta Protekt®), through hardenedDimension chartWasher sizeBolt sizeUNCNL3NL3.5NL3.5spNL4NL4spNL5NL5spNL6NL6spNL1/4”NL1/4”spNL8NL8spNL3/8”NL3/8”spNL10NL10spNL11NL12NL12spNL1/2”NL1/2”spNL14NL14spNL16NL16spNL18NL18spNL3/4”NL3/4”spNL20NL20spNL22NL22spNL24NL24spNL1”NL1”spNL27NL27spNL30NL30spNL33NL33spNL36NL36spNL39NL42NL45NL48NL52NL56NL60NL64NL68NL72NL76NL80NL85NL90NL95NL100NL105NL110NL115NL120NL125NL1308#5#6#6#8#8#10#10MetricM3M3.5M3.5M4M4M5M5M6M61/4”1/4”5/16”5/16”3/8”3/8”M8M87/16”M10M10M11M12M121/2”1/2”9/16”9/16”5/8”5/8”M14M14M16M16M18M183/4”3/4”7/8”7/8”M20M20M22M22M24M241”1”11111111/8”1/8”1/4”1/4”3/8”3/8”1/2”1...
  9. P. 9

    Torque guidelinesNord-Lock steel washers with zinc flake coating (Delta Protekt®)Nord-Lock steel washers with electro zinc plated bolt (grade 5)Oil,...
  10. P. 10

Text version

All Nord-Lock International AB catalogues and technical brochures

  1. X series

    16 Pages

  2. Bolted Magazine

    20 Pages