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 201–250 of 1,055 products

SKU	ID (MM)	OD (MM)	Thickness (MM)	Material	ID MM TOL	OD MM TOL	Quantity
975-1277	ID (MM) 3.327	OD (MM) 9.5	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1278	ID (MM) 3.353	OD (MM) 4.851	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1279	ID (MM) 3.353	OD (MM) 5.436	Thickness (MM) 0.127	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1280	ID (MM) 3.353	OD (MM) 5.69	Thickness (MM) 0.533	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1281	ID (MM) 3.353	OD (MM) 6.096	Thickness (MM) 0.533	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1282	ID (MM) 3.353	OD (MM) 7.112	Thickness (MM) 0.356	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1283	ID (MM) 3.353	OD (MM) 7.925	Thickness (MM) 0.051	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1284	ID (MM) 3.378	OD (MM) 4.699	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1285	ID (MM) 3.378	OD (MM) 5.893	Thickness (MM) 0.254	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1286	ID (MM) 3.378	OD (MM) 6.375	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1287	ID (MM) 3.378	OD (MM) 6.731	Thickness (MM) 0.432	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1288	ID (MM) 3.378	OD (MM) 12.624	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1289	ID (MM) 3.404	OD (MM) 5.613	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1290	ID (MM) 3.404	OD (MM) 9.449	Thickness (MM) 0.127	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1291	ID (MM) 3.404	OD (MM) 17.45	Thickness (MM) 1.27	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1292	ID (MM) 3.454	OD (MM) 5.893	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1293	ID (MM) 3.454	OD (MM) 9.474	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1294	ID (MM) 3.48	OD (MM) 6.274	Thickness (MM) 0.381	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1295	ID (MM) 3.48	OD (MM) 6.782	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1296	ID (MM) 3.48	OD (MM) 10.363	Thickness (MM) 0.965	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1297	ID (MM) 3.531	OD (MM) 5.512	Thickness (MM) 0.559	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1298	ID (MM) 3.531	OD (MM) 6.35	Thickness (MM) 1.041	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1299	ID (MM) 3.531	OD (MM) 7.493	Thickness (MM) 0.305	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1300	ID (MM) 3.531	OD (MM) 16.561	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1301	ID (MM) 3.556	OD (MM) 4.75	Thickness (MM) 0.737	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1302	ID (MM) 3.556	OD (MM) 5.436	Thickness (MM) 1.397	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1303	ID (MM) 3.556	OD (MM) 7.163	Thickness (MM) 0.381	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1304	ID (MM) 3.556	OD (MM) 9.246	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1305	ID (MM) 3.556	OD (MM) 10.338	Thickness (MM) 1.016	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1306	ID (MM) 3.556	OD (MM) 12.675	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1307	ID (MM) 3.581	OD (MM) 5.156	Thickness (MM) 0.127	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1308	ID (MM) 3.581	OD (MM) 6.756	Thickness (MM) 0.66	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1309	ID (MM) 3.581	OD (MM) 7.849	Thickness (MM) 0.102	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1310	ID (MM) 3.581	OD (MM) 9.449	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1311	ID (MM) 3.607	OD (MM) 5.309	Thickness (MM) 0.33	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1312	ID (MM) 3.607	OD (MM) 7.137	Thickness (MM) 0.381	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1313	ID (MM) 3.607	OD (MM) 7.874	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1314	ID (MM) 3.607	OD (MM) 8.712	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1315	ID (MM) 3.607	OD (MM) 9.322	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1316	ID (MM) 3.607	OD (MM) 11.049	Thickness (MM) 0.762	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1317	ID (MM) 3.632	OD (MM) 6.274	Thickness (MM) 1.549	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1318	ID (MM) 3.632	OD (MM) 7.391	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1319	ID (MM) 3.632	OD (MM) 7.722	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1320	ID (MM) 3.632	OD (MM) 7.823	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1321	ID (MM) 3.632	OD (MM) 9.779	Thickness (MM) 1.524	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1322	ID (MM) 3.632	OD (MM) 15.9	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1323	ID (MM) 3.658	OD (MM) 7.112	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1324	ID (MM) 3.658	OD (MM) 12.7	Thickness (MM) 0.381	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1325	ID (MM) 3.658	OD (MM) 18.974	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1326	ID (MM) 3.683	OD (MM) 7.163	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.