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

220-364-063

ID 0.276
OD 1.75
Thickness 0.063
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-365-031

ID 0.281
OD 0.42
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-366-062

ID 0.281
OD 0.5
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-367-062

ID 0.281
OD 0.54
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-368-125

ID 0.281
OD 0.562
Thickness 0.125
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-369-062

ID 0.281
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-37-031

ID 0.078
OD 0.63
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-370-062

ID 0.281
OD 0.734
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-371-031

ID 0.281
OD 0.75
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-372-016

ID 0.281
OD 0.875
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-373-031

ID 0.281
OD 2.0
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-374-062

ID 0.287
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-375-031

ID 0.295
OD 0.625
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-376-031

ID 0.3
OD 0.422
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-377-031

ID 0.3
OD 0.625
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-378-016

ID 0.306
OD 0.437
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-379-031

ID 0.306
OD 0.75
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-38-020

ID 0.089
OD 0.156
Thickness 0.02
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-380-031

ID 0.312
OD 0.437
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-381-031

ID 0.312
OD 0.447
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-382-031

ID 0.312
OD 0.5
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-383-031

ID 0.312
OD 0.544
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-384-062

ID 0.312
OD 0.562
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-385-031

ID 0.312
OD 0.625
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-386-010

ID 0.312
OD 0.75
Thickness 0.01
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-387-031

ID 0.312
OD 0.875
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-388-062

ID 0.312
OD 1.0
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-389-062

ID 0.312
OD 1.25
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-39-031

ID 0.089
OD 0.169
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-390-031

ID 0.317
OD 0.437
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-391-031

ID 0.317
OD 0.469
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-392-062

ID 0.317
OD 0.5
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-393-031

ID 0.317
OD 0.515
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-394-031

ID 0.317
OD 0.562
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-395-031

ID 0.317
OD 0.6
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-396-031

ID 0.317
OD 0.618
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-397-062

ID 0.317
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-398-062

ID 0.317
OD 0.687
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-399-062

ID 0.317
OD 0.75
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-40-031

ID 0.089
OD 0.187
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-400-031

ID 0.317
OD 0.812
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-401-031

ID 0.323
OD 0.471
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-402-016

ID 0.323
OD 0.483
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-403-062

ID 0.323
OD 0.5
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-404-045

ID 0.323
OD 0.555
Thickness 0.045
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-405-031

ID 0.323
OD 0.562
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-406-062

ID 0.323
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-407-062

ID 0.323
OD 0.687
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-408-031

ID 0.323
OD 0.75
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-409-062

ID 0.323
OD 1.0
Thickness 0.062
Material Nylon
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.