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 301–350 of 4,971 products

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

630-2424

ID (MM) 3.175
OD (MM) 7.925
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2425

ID (MM) 3.175
OD (MM) 9.042
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2426

ID (MM) 3.175
OD (MM) 9.271
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2427

ID (MM) 3.175
OD (MM) 9.449
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2428

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2429

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2430

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2431

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2432

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2433

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2434

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2435

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2436

ID (MM) 3.175
OD (MM) 9.525
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2437

ID (MM) 3.175
OD (MM) 10.135
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2438

ID (MM) 3.175
OD (MM) 10.287
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2439

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2440

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2441

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2442

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2443

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2444

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2445

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2446

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2447

ID (MM) 3.175
OD (MM) 11.1
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2448

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2449

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2450

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2451

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2452

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2453

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2454

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2455

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2456

ID (MM) 3.175
OD (MM) 12.7
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2457

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2458

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2459

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2460

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2461

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2462

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2463

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2464

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2465

ID (MM) 3.175
OD (MM) 14.275
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2467

ID (MM) 3.175
OD (MM) 15.621
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2468

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2469

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2470

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2471

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2472

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2473

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-2474

ID (MM) 3.175
OD (MM) 15.875
Thickness (MM) 1.016
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.