Round Flat Washers - Precision Stamped in Any Material

Round flat washers are fundamental components in fastener assemblies, providing load distribution, surface protection, and vibration resistance across virtually every industry. Superior Washer & Gasket Corp manufactures round flat washers in a comprehensive range of materials-including aluminum, brass, copper, stainless steel, carbon steel, nylon, PTFE, and specialty alloys-in standard and custom sizes to precise tolerances.

As an ISO 9001:2015 certified flat washer manufacturer, we maintain one of the largest inventories of round flat washers available from a domestic source. Whether you need standard washers by the thousand or special flat washers produced to your custom specifications, our washer manufacturing capabilities deliver fast, reliable solutions made in the U.S.A.

  • Round flat washers in metals, plastics, and specialty materials
  • Broad standard size inventory for fast delivery
  • Custom flat washers stamped to your specifications
  • ISO 9001:2015 certified quality management
  • Made in the U.S.A. with material certifications available
SKU ID OD Thickness Material ID TOL OD TOL Quantity Actions

300-1309-075

ID 0.259
OD 0.495
Thickness 0.075
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-131-020

ID 0.093
OD 0.247
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1310-082

ID 0.259
OD 0.5
Thickness 0.082
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1311-015

ID 0.259
OD 0.562
Thickness 0.015
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1312-010

ID 0.259
OD 0.601
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1313-010

ID 0.259
OD 0.624
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1313-020

ID 0.259
OD 0.624
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1314-124

ID 0.259
OD 1.497
Thickness 0.124
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1315-005

ID 0.259
OD 1.5
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1316-010

ID 0.26
OD 0.355
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1317-005

ID 0.26
OD 0.365
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1318-047

ID 0.26
OD 0.365
Thickness 0.047
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1319-002

ID 0.26
OD 0.372
Thickness 0.002
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-132-028

ID 0.093
OD 0.25
Thickness 0.028
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1320-006

ID 0.26
OD 0.381
Thickness 0.006
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1321-020

ID 0.26
OD 0.389
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1322-019

ID 0.26
OD 0.417
Thickness 0.019
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1323-019

ID 0.26
OD 0.423
Thickness 0.019
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1324-026

ID 0.26
OD 0.437
Thickness 0.026
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1325-040

ID 0.26
OD 0.437
Thickness 0.04
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1326-072

ID 0.26
OD 0.467
Thickness 0.072
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1327-047

ID 0.26
OD 0.482
Thickness 0.047
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1328-061

ID 0.26
OD 0.49
Thickness 0.061
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1329-010

ID 0.26
OD 0.495
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-133-020

ID 0.093
OD 0.282
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1330-020

ID 0.26
OD 0.534
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1331-031

ID 0.26
OD 0.564
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1332-066

ID 0.26
OD 0.585
Thickness 0.066
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1333-041

ID 0.26
OD 0.686
Thickness 0.041
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1334-042

ID 0.261
OD 0.342
Thickness 0.042
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1335-016

ID 0.261
OD 0.364
Thickness 0.016
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1336-031

ID 0.261
OD 0.555
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1337-031

ID 0.261
OD 0.617
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1338-005

ID 0.261
OD 0.625
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1339-063

ID 0.261
OD 0.998
Thickness 0.063
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-134-017

ID 0.093
OD 0.291
Thickness 0.017
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1340-020

ID 0.261
OD 1.078
Thickness 0.02
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1341-024

ID 0.262
OD 0.32
Thickness 0.024
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1342-018

ID 0.262
OD 0.328
Thickness 0.018
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1343-038

ID 0.262
OD 0.561
Thickness 0.038
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1344-002

ID 0.262
OD 0.625
Thickness 0.002
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1345-010

ID 0.262
OD 0.625
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1346-053

ID 0.262
OD 0.696
Thickness 0.053
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1347-130

ID 0.262
OD 0.998
Thickness 0.13
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1348-019

ID 0.262
OD 1.079
Thickness 0.019
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1349-031

ID 0.263
OD 0.361
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-135-019

ID 0.094
OD 0.15
Thickness 0.019
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1350-016

ID 0.263
OD 0.375
Thickness 0.016
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1351-032

ID 0.263
OD 0.383
Thickness 0.032
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1352-060

ID 0.263
OD 0.562
Thickness 0.06
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

Description

Meeting Your Manufacturing, Material, And Quality Requirements

Numerous factors affect the quality and long-term performance of flat washers. As a U.S.-based manufacturer and an ISO 9001:2015 certified company, we assure you that all parts we ship are manufactured domestically. We offer metal washers made from a diverse range of materials, including conventional options like copper stampings, aluminum washers, and stainless steel washers (which can include passivation). We also specialize in plastic washers and exotic materials like Inconel, Nylatron washers, and Monel. Additionally, we can quote a variety of platings including zinc, cad yellow, and black ox to suit your specific needs.