Home | Metric Brass Washers - DIN & ISO Standard Sizes

Metric Brass Washers - DIN & ISO Standard Sizes

Metric brass washers provide excellent corrosion resistance and conductivity in metric fastener assemblies for plumbing, marine, electrical, and precision instrument applications. Superior Washer & Gasket Corp manufactures metric brass washers to DIN and ISO standards, with custom metric sizes available for non-standard applications.

Our ISO 9001:2015 certified quality management system ensures every metric washer we produce meets dimensional and material specifications. We stock a broad range of metric brass washers and can quickly manufacture custom sizes from our extensive brass inventory-all made in the U.S.A.

  • Metric brass washers in DIN and ISO standard sizes
  • Excellent corrosion resistance and conductivity
  • Custom metric sizes produced to specification
  • ISO 9001:2015 certified quality control
  • Made in the U.S.A.

Showing 151–200 of 1,055 products

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

975-1227

ID (MM) 3.073
OD (MM) 6.528
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1228

ID (MM) 3.073
OD (MM) 12.624
Thickness (MM) 0.254
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1229

ID (MM) 3.099
OD (MM) 4.724
Thickness (MM) 0.406
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1230

ID (MM) 3.099
OD (MM) 8.89
Thickness (MM) 0.33
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1231

ID (MM) 3.124
OD (MM) 4.496
Thickness (MM) 0.381
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1232

ID (MM) 3.15
OD (MM) 5.436
Thickness (MM) 0.762
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1233

ID (MM) 3.15
OD (MM) 5.613
Thickness (MM) 0.66
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1234

ID (MM) 3.15
OD (MM) 6.223
Thickness (MM) 0.406
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1235

ID (MM) 3.15
OD (MM) 6.274
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1236

ID (MM) 3.15
OD (MM) 11.887
Thickness (MM) 0.787
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1237

ID (MM) 3.175
OD (MM) 5.131
Thickness (MM) 0.635
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1238

ID (MM) 3.175
OD (MM) 5.994
Thickness (MM) 0.025
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1239

ID (MM) 3.175
OD (MM) 6.274
Thickness (MM) 0.406
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1240

ID (MM) 3.175
OD (MM) 6.756
Thickness (MM) 1.016
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1241

ID (MM) 3.175
OD (MM) 7.95
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1242

ID (MM) 3.175
OD (MM) 11.049
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1243

ID (MM) 3.175
OD (MM) 18.999
Thickness (MM) 0.762
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1244

ID (MM) 3.2
OD (MM) 4.801
Thickness (MM) 0.406
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1245

ID (MM) 3.2
OD (MM) 6.528
Thickness (MM) 0.66
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1246

ID (MM) 3.2
OD (MM) 12.573
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1247

ID (MM) 3.2
OD (MM) 18.872
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1248

ID (MM) 3.226
OD (MM) 4.75
Thickness (MM) 0.381
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1249

ID (MM) 3.226
OD (MM) 5.588
Thickness (MM) 0.787
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1250

ID (MM) 3.226
OD (MM) 5.918
Thickness (MM) 0.457
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1251

ID (MM) 3.226
OD (MM) 6.35
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1252

ID (MM) 3.226
OD (MM) 6.477
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1253

ID (MM) 3.226
OD (MM) 7.112
Thickness (MM) 0.635
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1254

ID (MM) 3.226
OD (MM) 7.976
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1255

ID (MM) 3.226
OD (MM) 9.449
Thickness (MM) 0.635
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1256

ID (MM) 3.251
OD (MM) 4.394
Thickness (MM) 0.127
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1257

ID (MM) 3.251
OD (MM) 4.623
Thickness (MM) 0.305
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1258

ID (MM) 3.251
OD (MM) 6.325
Thickness (MM) 0.533
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1259

ID (MM) 3.251
OD (MM) 7.849
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1260

ID (MM) 3.251
OD (MM) 9.093
Thickness (MM) 0.787
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1261

ID (MM) 3.251
OD (MM) 9.474
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1262

ID (MM) 3.251
OD (MM) 11.913
Thickness (MM) 0.406
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1263

ID (MM) 3.251
OD (MM) 14.275
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1264

ID (MM) 3.277
OD (MM) 4.115
Thickness (MM) 0.254
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1265

ID (MM) 3.277
OD (MM) 5.512
Thickness (MM) 0.991
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1266

ID (MM) 3.277
OD (MM) 7.036
Thickness (MM) 1.651
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1267

ID (MM) 3.277
OD (MM) 8.306
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1268

ID (MM) 3.277
OD (MM) 10.338
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1269

ID (MM) 3.277
OD (MM) 15.621
Thickness (MM) 1.6
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1270

ID (MM) 3.302
OD (MM) 6.147
Thickness (MM) 0.787
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1271

ID (MM) 3.302
OD (MM) 6.248
Thickness (MM) 0.381
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1272

ID (MM) 3.302
OD (MM) 7.747
Thickness (MM) 0.254
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1273

ID (MM) 3.302
OD (MM) 11.049
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1274

ID (MM) 3.302
OD (MM) 12.725
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1275

ID (MM) 3.327
OD (MM) 5.867
Thickness (MM) 0.508
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

975-1276

ID (MM) 3.327
OD (MM) 8.611
Thickness (MM) 0.813
Material Brass
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

Metric Brass Washer Frequently Asked Questions

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

What are metric brass washers?
Metric brass washers are flat washers dimensioned in millimeters for use with metric fasteners. Superior Washer manufactures metric brass washers to DIN and ISO standard sizes as well as custom metric dimensions, providing excellent corrosion resistance, electrical conductivity, and an attractive appearance for plumbing, marine, electrical, and precision instrument applications. Our metric brass catalog covers over 1,055 configurations.

What DIN and ISO standards do your metric brass washers conform to?
Superior Washer metric brass washers are produced to DIN 125, DIN 9021, and ISO 7089/7090 standard dimensions where applicable, as well as custom metric sizes not covered by a specific standard. All washers carry a dimensional tolerance of +/- 0.127 mm on both ID and OD.

What size range are your metric brass washers available in?
Our metric brass washers cover ID sizes from approximately 0.91 mm through 19.15 mm and OD sizes from approximately 3.15 mm through 50.8 mm, across a wide range of thicknesses from 0.025 mm through 3.96 mm. This extensive range supports miniature, precision, and industrial metric fastener applications.

What brass alloy do you use for metric washers?
Metric brass washers are manufactured from Brass Alloy 260 (cartridge brass, 70% copper / 30% zinc), which offers the best balance of corrosion resistance, formability, conductivity, and strength for washer applications.

Can you produce custom metric brass washers?
Yes. We manufacture custom metric brass 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 brass washers made in the USA?
Yes. All metric brass washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Need imperial sizing instead? We also stock brass and other materials in SAE and USS dimensions. Browse the full flat washers catalog to compare all sizing and material options.