Plain Washer vs Spring Washer vs Nord-Lock Washer: What’s the Difference?
Compare plain, spring and Nord-Lock washers by joint function, locking method and the details to send when requesting a washer quotation.
Plain washers, spring washers and Nord-Lock washers all sit under a fastener head or nut, but they are not interchangeable. The correct choice depends on whether the joint needs load distribution, a spring-style locking element, or a wedge-locking system for vibration-sensitive applications.
Quick answer: which washer does what?
A Plain Washer primarily spreads load under a nut or bolt head. A Spring Washer is used where the specified joint calls for a spring-style locking washer. A Nord-Lock Washer uses a wedge-locking arrangement for applications where vibration resistance is part of the requirement.
When is a plain washer used?
Plain washers are commonly specified to distribute load and provide a bearing surface under the fastener. On this site, plain washers are listed to IS 2016, DIN 125 and ISO 7089 with MS, SS304 and SS316 material options. The required washer size and material should match the mating fastener and project specification.
When is a spring washer used?
Spring washers are a different component from plain washers and should be ordered separately when a drawing, bill of materials or assembly specification calls for them. If an enquiry says “bolt set,” state explicitly whether a spring washer is included so the quotation matches the required set combination.
When is a Nord-Lock washer used?
Nord-Lock washers are used for wedge-locking applications where the specified joint is exposed to vibration or dynamic loading. Confirm the fastener size, washer material and project requirement before ordering rather than substituting them for a plain or spring washer without approval.
What should you send for a washer quotation?
Send the washer type, fastener size, material or finish, applicable standard if specified, quantity and any drawing or set requirement. Browse the full Washers range, including Wave Washer and F436 Washer, or send your washer requirement for a quotation.