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

300-1738-062

ID 0.344
OD 1.125
Thickness 0.062
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1738-078

ID 0.344
OD 1.125
Thickness 0.078
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1738-090

ID 0.344
OD 1.125
Thickness 0.09
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1738-100

ID 0.344
OD 1.125
Thickness 0.1
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1738-125

ID 0.344
OD 1.125
Thickness 0.125
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1739-122

ID 0.345
OD 0.997
Thickness 0.122
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-174-010

ID 0.099
OD 0.309
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1740-031

ID 0.345
OD 1.119
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1741-067

ID 0.345
OD 1.373
Thickness 0.067
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1742-062

ID 0.345
OD 1.374
Thickness 0.062
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1743-030

ID 0.346
OD 0.687
Thickness 0.03
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1744-060

ID 0.346
OD 0.691
Thickness 0.06
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1745-030

ID 0.346
OD 0.719
Thickness 0.03
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1746-030

ID 0.346
OD 0.748
Thickness 0.03
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1746-079

ID 0.346
OD 0.748
Thickness 0.079
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1747-060

ID 0.346
OD 0.812
Thickness 0.06
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1748-087

ID 0.346
OD 0.998
Thickness 0.087
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1749-032

ID 0.347
OD 0.56
Thickness 0.032
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-175-031

ID 0.099
OD 0.311
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-175-060

ID 0.099
OD 0.311
Thickness 0.06
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1750-024

ID 0.347
OD 0.624
Thickness 0.024
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1751-058

ID 0.347
OD 0.645
Thickness 0.058
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1752-093

ID 0.347
OD 0.695
Thickness 0.093
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1753-050

ID 0.347
OD 0.749
Thickness 0.05
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1754-058

ID 0.347
OD 1.0
Thickness 0.058
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1755-094

ID 0.347
OD 1.125
Thickness 0.094
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1756-059

ID 0.347
OD 1.126
Thickness 0.059
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1757-058

ID 0.347
OD 1.248
Thickness 0.058
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1758-124

ID 0.347
OD 1.373
Thickness 0.124
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1759-033

ID 0.35
OD 1.12
Thickness 0.033
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-176-016

ID 0.099
OD 0.323
Thickness 0.016
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1760-026

ID 0.352
OD 0.45
Thickness 0.026
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1761-005

ID 0.352
OD 0.468
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1762-026

ID 0.352
OD 0.49
Thickness 0.026
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1763-005

ID 0.352
OD 0.495
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1764-031

ID 0.352
OD 0.496
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1765-005

ID 0.352
OD 0.623
Thickness 0.005
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1766-015

ID 0.353
OD 0.63
Thickness 0.015
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1767-063

ID 0.353
OD 0.68
Thickness 0.063
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1768-156

ID 0.354
OD 0.749
Thickness 0.156
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1769-031

ID 0.356
OD 0.514
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-177-010

ID 0.1
OD 0.14
Thickness 0.01
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1770-031

ID 0.357
OD 0.552
Thickness 0.031
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1771-029

ID 0.357
OD 0.56
Thickness 0.029
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1772-156

ID 0.358
OD 0.75
Thickness 0.156
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1773-015

ID 0.36
OD 0.482
Thickness 0.015
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1774-060

ID 0.364
OD 0.495
Thickness 0.06
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1775-034

ID 0.364
OD 0.5
Thickness 0.034
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1776-019

ID 0.364
OD 0.562
Thickness 0.019
Material Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

300-1777-046

ID 0.364
OD 0.625
Thickness 0.046
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.