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

220-41-020

ID 0.089
OD 0.196
Thickness 0.02
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-410-031

ID 0.328
OD 0.5
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-411-062

ID 0.328
OD 0.562
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-412-093

ID 0.328
OD 0.625
Thickness 0.093
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-413-062

ID 0.328
OD 0.75
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-414-020

ID 0.334
OD 0.483
Thickness 0.02
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-415-062

ID 0.334
OD 0.525
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-416-093

ID 0.334
OD 0.562
Thickness 0.093
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-417-062

ID 0.334
OD 0.64
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-418-062

ID 0.339
OD 0.665
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-419-031

ID 0.343
OD 0.687
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-42-016

ID 0.089
OD 0.218
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-420-062

ID 0.343
OD 0.75
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-421-062

ID 0.343
OD 0.875
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-422-062

ID 0.346
OD 0.473
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-423-062

ID 0.346
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-424-062

ID 0.346
OD 0.687
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-425-031

ID 0.357
OD 0.5
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-426-031

ID 0.375
OD 0.5
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-427-031

ID 0.375
OD 0.562
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-428-016

ID 0.375
OD 0.625
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-429-045

ID 0.375
OD 0.656
Thickness 0.045
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-43-062

ID 0.089
OD 0.234
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-430-020

ID 0.375
OD 0.672
Thickness 0.02
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-431-031

ID 0.375
OD 0.718
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-432-062

ID 0.375
OD 0.75
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-433-005

ID 0.375
OD 0.812
Thickness 0.005
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-434-062

ID 0.375
OD 0.875
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-435-062

ID 0.375
OD 1.0
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-436-031

ID 0.375
OD 1.214
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-437-010

ID 0.375
OD 1.25
Thickness 0.01
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-438-031

ID 0.38
OD 0.812
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-439-016

ID 0.385
OD 0.5
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-44-031

ID 0.089
OD 0.25
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-440-062

ID 0.385
OD 0.562
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-441-062

ID 0.385
OD 0.625
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-442-016

ID 0.385
OD 0.653
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-443-031

ID 0.385
OD 0.687
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-444-031

ID 0.385
OD 0.75
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-445-016

ID 0.385
OD 0.97
Thickness 0.016
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-446-062

ID 0.385
OD 1.0
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-447-062

ID 0.385
OD 1.125
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-448-010

ID 0.385
OD 1.25
Thickness 0.01
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-449-062

ID 0.39
OD 0.495
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-45-031

ID 0.089
OD 0.281
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-450-047

ID 0.39
OD 0.609
Thickness 0.047
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-451-031

ID 0.39
OD 0.625
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-452-062

ID 0.39
OD 0.687
Thickness 0.062
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-453-031

ID 0.39
OD 0.718
Thickness 0.031
Material Nylon
ID TOL +-.005
OD TOL +-.005
Quantity

220-454-016

ID 0.39
OD 0.75
Thickness 0.016
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.