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 251–300 of 1,055 products

SKU	ID (MM)	OD (MM)	Thickness (MM)	Material	ID MM TOL	OD MM TOL	Quantity
975-1327	ID (MM) 3.683	OD (MM) 7.569	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1328	ID (MM) 3.683	OD (MM) 7.899	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1329	ID (MM) 3.683	OD (MM) 10.338	Thickness (MM) 1.016	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1330	ID (MM) 3.734	OD (MM) 6.248	Thickness (MM) 0.381	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1331	ID (MM) 3.734	OD (MM) 14.122	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1332	ID (MM) 3.759	OD (MM) 6.833	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1333	ID (MM) 3.759	OD (MM) 9.068	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1334	ID (MM) 3.785	OD (MM) 7.188	Thickness (MM) 1.829	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1335	ID (MM) 3.785	OD (MM) 8.306	Thickness (MM) 0.838	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1336	ID (MM) 3.785	OD (MM) 8.788	Thickness (MM) 0.305	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1337	ID (MM) 3.785	OD (MM) 9.5	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1338	ID (MM) 3.785	OD (MM) 12.548	Thickness (MM) 0.533	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1339	ID (MM) 3.81	OD (MM) 9.347	Thickness (MM) 0.762	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1340	ID (MM) 3.81	OD (MM) 9.525	Thickness (MM) 0.813	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1341	ID (MM) 3.81	OD (MM) 18.948	Thickness (MM) 0.914	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1342	ID (MM) 3.835	OD (MM) 7.925	Thickness (MM) 0.686	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1343	ID (MM) 3.835	OD (MM) 10.185	Thickness (MM) 0.66	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1344	ID (MM) 3.835	OD (MM) 11.1	Thickness (MM) 0.762	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1345	ID (MM) 3.835	OD (MM) 25.425	Thickness (MM) 1.549	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1346	ID (MM) 3.861	OD (MM) 6.35	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1347	ID (MM) 3.861	OD (MM) 6.502	Thickness (MM) 1.575	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1348	ID (MM) 3.861	OD (MM) 7.061	Thickness (MM) 0.457	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1349	ID (MM) 3.861	OD (MM) 8.357	Thickness (MM) 0.737	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1350	ID (MM) 3.861	OD (MM) 9.525	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1351	ID (MM) 3.861	OD (MM) 12.7	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1352	ID (MM) 3.886	OD (MM) 9.449	Thickness (MM) 0.533	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1353	ID (MM) 3.886	OD (MM) 11.887	Thickness (MM) 0.762	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1354	ID (MM) 3.912	OD (MM) 7.823	Thickness (MM) 0.635	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1355	ID (MM) 3.912	OD (MM) 11.278	Thickness (MM) 0.94	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1356	ID (MM) 3.912	OD (MM) 12.675	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1357	ID (MM) 3.937	OD (MM) 14.275	Thickness (MM) 1.041	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1358	ID (MM) 3.962	OD (MM) 6.248	Thickness (MM) 0.254	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1359	ID (MM) 3.962	OD (MM) 7.95	Thickness (MM) 1.041	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1360	ID (MM) 3.988	OD (MM) 9.55	Thickness (MM) 1.27	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1361	ID (MM) 3.988	OD (MM) 9.881	Thickness (MM) 0.457	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1362	ID (MM) 3.988	OD (MM) 11.176	Thickness (MM) 1.016	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1363	ID (MM) 4.013	OD (MM) 5.486	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1364	ID (MM) 4.013	OD (MM) 6.655	Thickness (MM) 0.457	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1365	ID (MM) 4.013	OD (MM) 6.96	Thickness (MM) 0.787	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1366	ID (MM) 4.013	OD (MM) 8.255	Thickness (MM) 0.508	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1367	ID (MM) 4.013	OD (MM) 14.427	Thickness (MM) 1.575	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1368	ID (MM) 4.039	OD (MM) 6.299	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1369	ID (MM) 4.039	OD (MM) 6.68	Thickness (MM) 0.457	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1370	ID (MM) 4.039	OD (MM) 6.883	Thickness (MM) 0.127	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1371	ID (MM) 4.039	OD (MM) 7.137	Thickness (MM) 0.127	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1372	ID (MM) 4.039	OD (MM) 9.5	Thickness (MM) 1.524	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1373	ID (MM) 4.039	OD (MM) 12.624	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1374	ID (MM) 4.039	OD (MM) 13.386	Thickness (MM) 0.406	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1375	ID (MM) 4.039	OD (MM) 14.3	Thickness (MM) 1.041	Material Brass	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
975-1376	ID (MM) 4.039	OD (MM) 15.926	Thickness (MM) 1.6	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.