Home | Round Flat Washers - Precision Stamped in Any Material

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

650-6346-115

ID 0.563
OD 2.501
Thickness 0.115
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6347-020

ID 0.203
OD 0.39
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6348-011

ID 0.239
OD 0.438
Thickness 0.011
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6349-005

ID 0.255
OD 0.503
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-635-060

ID 0.145
OD 0.269
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6350-036

ID 0.219
OD 0.609
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6351-086

ID 0.316
OD 0.624
Thickness 0.086
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6352-049

ID 0.391
OD 0.626
Thickness 0.049
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6353-049

ID 0.326
OD 0.687
Thickness 0.049
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6354-062

ID 0.222
OD 0.688
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6355-031

ID 0.261
OD 0.749
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6356-031

ID 0.38
OD 0.75
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6357-120

ID 0.408
OD 0.887
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6358-076

ID 0.518
OD 0.936
Thickness 0.076
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6359-092

ID 0.518
OD 0.936
Thickness 0.092
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-636-020

ID 0.145
OD 0.277
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6360-059

ID 0.253
OD 1.0
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6361-036

ID 0.845
OD 1.1488
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6362-020

ID 1.003
OD 1.255
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6363-030

ID 0.815
OD 1.988
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6364-093

ID 1.252
OD 1.999
Thickness 0.093
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6365-063

ID 0.347
OD 0.562
Thickness 0.063
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6366-049

ID 0.269
OD 0.563
Thickness 0.049
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6367-060

ID 0.176
OD 0.625
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6368-077

ID 0.202
OD 0.932
Thickness 0.077
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6369-120

ID 0.641
OD 1.123
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-637-030

ID 0.145
OD 0.282
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6370-062

ID 0.351
OD 1.128
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6371-048

ID 0.89
OD 1.375
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6372-047

ID 1.039
OD 1.47
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6373-103

ID 0.883
OD 1.64
Thickness 0.103
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6374-095

ID 0.534
OD 1.752
Thickness 0.095
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6375-118

ID 0.753
OD 2.499
Thickness 0.118
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6376-040

ID 0.139
OD 0.279
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6377-059

ID 0.125
OD 0.375
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6378-062

ID 0.205
OD 0.375
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6379-015

ID 0.124
OD 0.437
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-638-030

ID 0.145
OD 0.313
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6380-016

ID 0.267
OD 0.437
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6381-010

ID 0.355
OD 0.491
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6382-029

ID 0.331
OD 0.557
Thickness 0.029
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6383-056

ID 0.196
OD 0.589
Thickness 0.056
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6384-114

ID 0.201
OD 0.681
Thickness 0.114
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6385-062

ID 0.261
OD 0.746
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6386-040

ID 0.263
OD 0.879
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6387-062

ID 0.634
OD 0.902
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6388-063

ID 0.641
OD 0.933
Thickness 0.063
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6389-062

ID 0.313
OD 1.125
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-639-047

ID 0.145
OD 0.328
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6390-118

ID 0.266
OD 1.127
Thickness 0.118
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

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.