Home | Metric Stainless Steel Washers - Corrosion-Resistant Metric Flat Washers

Metric Stainless Steel Washers - Corrosion-Resistant Metric Flat Washers

Metric stainless steel washers provide exceptional corrosion resistance and strength for metric fastener assemblies in marine, food processing, chemical, and outdoor environments. Superior Washer & Gasket Corp manufactures metric stainless steel flat washers in 304, 316, and other grades to DIN and ISO standards, with custom metric sizes available.

Our ISO 9001:2015 certified facility supplies metric stainless steel washers from stock inventory and produces custom metric stainless washers for specialized applications. All stainless steel washers are made in the U.S.A. with full material certifications available.

  • Metric stainless steel washers in 304 and 316 grades
  • DIN and ISO standard sizes in stock
  • Custom metric stainless steel flat washers to specification
  • ISO 9001:2015 certified quality assurance
  • Made in the U.S.A.

Showing 401–450 of 4,971 products

SKU ID (MM) OD (MM) Thickness (MM) Material ID MM TOL OD MM TOL Quantity

630-2527

ID (MM) 3.226
OD (MM) 4.75
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2529

ID (MM) 3.226
OD (MM) 4.775
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2530

ID (MM) 3.226
OD (MM) 4.775
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2531

ID (MM) 3.226
OD (MM) 6.121
Thickness (MM) 0.203
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2532

ID (MM) 3.226
OD (MM) 6.223
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2533

ID (MM) 3.226
OD (MM) 6.223
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2535

ID (MM) 3.226
OD (MM) 6.35
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2536

ID (MM) 3.226
OD (MM) 6.375
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2537

ID (MM) 3.226
OD (MM) 6.401
Thickness (MM) 0.711
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2538

ID (MM) 3.226
OD (MM) 6.985
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2539

ID (MM) 3.226
OD (MM) 7.112
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2540

ID (MM) 3.226
OD (MM) 7.137
Thickness (MM) 0.838
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2541

ID (MM) 3.226
OD (MM) 7.493
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2542

ID (MM) 3.226
OD (MM) 7.874
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2543

ID (MM) 3.226
OD (MM) 7.899
Thickness (MM) 1.219
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2544

ID (MM) 3.226
OD (MM) 7.925
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2545

ID (MM) 3.226
OD (MM) 7.95
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2546

ID (MM) 3.226
OD (MM) 8.636
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2547

ID (MM) 3.226
OD (MM) 8.788
Thickness (MM) 0.61
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2548

ID (MM) 3.226
OD (MM) 9.398
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2549

ID (MM) 3.226
OD (MM) 9.474
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2550

ID (MM) 3.226
OD (MM) 9.627
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2551

ID (MM) 3.226
OD (MM) 9.804
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2552

ID (MM) 3.226
OD (MM) 9.957
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2553

ID (MM) 3.226
OD (MM) 11.151
Thickness (MM) 0.533
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2554

ID (MM) 3.226
OD (MM) 11.252
Thickness (MM) 0.432
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2555

ID (MM) 3.226
OD (MM) 14.249
Thickness (MM) 0.203
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2556

ID (MM) 3.226
OD (MM) 15.85
Thickness (MM) 1.549
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2558

ID (MM) 3.251
OD (MM) 4.547
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2559

ID (MM) 3.251
OD (MM) 4.699
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2560

ID (MM) 3.251
OD (MM) 4.75
Thickness (MM) 0.203
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2561

ID (MM) 3.251
OD (MM) 4.75
Thickness (MM) 0.737
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2563

ID (MM) 3.251
OD (MM) 6.248
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2564

ID (MM) 3.251
OD (MM) 6.807
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2565

ID (MM) 3.251
OD (MM) 7.01
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2566

ID (MM) 3.251
OD (MM) 7.137
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2567

ID (MM) 3.251
OD (MM) 7.137
Thickness (MM) 0.737
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2568

ID (MM) 3.251
OD (MM) 7.417
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2570

ID (MM) 3.251
OD (MM) 7.925
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2571

ID (MM) 3.251
OD (MM) 12.929
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2572

ID (MM) 3.251
OD (MM) 14.249
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2573

ID (MM) 3.251
OD (MM) 15.418
Thickness (MM) 1.321
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2574

ID (MM) 3.251
OD (MM) 15.875
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2575

ID (MM) 3.251
OD (MM) 18.923
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2577

ID (MM) 3.251
OD (MM) 23.8
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2579

ID (MM) 3.277
OD (MM) 4.572
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2580

ID (MM) 3.277
OD (MM) 4.699
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2581

ID (MM) 3.277
OD (MM) 4.75
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2582

ID (MM) 3.277
OD (MM) 5.537
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2583

ID (MM) 3.277
OD (MM) 5.588
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

Metric Stainless Steel Washer Frequently Asked Questions

Below are answers to some of the most common questions about metric stainless steel washers.

What are metric stainless steel washers?
Metric stainless steel washers are flat washers manufactured from austenitic stainless steel (typically Type 301, 302, or 304), dimensioned in millimeters for metric fastener assemblies. They offer excellent corrosion resistance without coatings or plating, making them the preferred metric washer choice for outdoor, marine, food service, pharmaceutical, and other corrosive environments where metric fasteners are specified.

What stainless steel grade do your metric washers use?
Superior Washer metric stainless steel washers are manufactured from Type 301, Type 302, or Type 304 austenitic stainless steel. All three grades provide reliable corrosion resistance for most applications, with Type 301 offering higher strength for formed or spring-style configurations. For elevated chloride environments such as marine or coastal exposure, metric 316 stainless steel washers offer superior chloride resistance and can be produced to order.

What metric sizes are your stainless steel washers available in?
Superior Washer stocks metric stainless steel washers in standard DIN 125, DIN 9021, and ISO 7089/7090 sizes to fit M2 through M30 and larger metric fasteners. The catalog covers a broad range of thicknesses for both narrow and wide-OD metric washer configurations. Custom metric sizes are available to order.

When should I use metric stainless steel washers instead of metric zinc-plated steel?
Metric stainless steel washers provide inherent, permanent corrosion resistance that does not depend on a coating. Metric zinc-plated steel washers will corrode when the zinc is scratched, worn, or exposed to chlorides or prolonged moisture. For outdoor, marine, food processing, medical, or long-term service applications, stainless steel is the correct choice.

Can you produce custom metric stainless steel washers?
Yes. We manufacture custom metric stainless steel washers to your exact millimeter OD, ID, and thickness specifications. Contact us via the Quick Quote form or call NY (631) 273-8282 or SC (803) 366-3250.

Are your metric stainless steel washers made in the USA?
Yes. All metric stainless steel washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Need a different metric material? We also stock brass, copper, nylon, and more in metric sizing. Browse the full flat washers catalog to compare all sizing and material options.