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

650-6587-038

ID 1.127
OD 1.75
Thickness 0.038
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6588-048

ID 0.189
OD 0.312
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6589-046

ID 0.207
OD 0.376
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-659-031

ID 0.147
OD 0.268
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6590-009

ID 0.319
OD 0.468
Thickness 0.009
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6591-060

ID 0.331
OD 0.75
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6592-120

ID 0.516
OD 0.874
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6593-060

ID 0.658
OD 0.936
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6594-187

ID 0.59
OD 1.062
Thickness 0.187
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6595-048

ID 0.409
OD 1.25
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6596-089

ID 0.196
OD 1.682
Thickness 0.089
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6597-040

ID 0.125
OD 0.5
Thickness 0.04
Material Steel Low Carbon
ID TOL +-0005
OD TOL +-.005
Quantity

650-6598-036

ID 0.206
OD 0.536
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6599-020

ID 0.365
OD 0.372
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-66-016

ID 0.084
OD 0.219
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-660-040

ID 0.147
OD 0.377
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6600-020

ID 0.444
OD 0.701
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6601-064

ID 0.346
OD 0.751
Thickness 0.064
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6602-074

ID 0.339
OD 0.785
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6603-061

ID 0.535
OD 0.812
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6604-030

ID 0.432
OD 0.874
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6605-060

ID 0.539
OD 0.998
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6606-092

ID 0.283
OD 1.0
Thickness 0.092
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6607-062

ID 0.38
OD 1.123
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6608-087

ID 0.894
OD 1.751
Thickness 0.087
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6609-091

ID 0.524
OD 2.124
Thickness 0.091
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-661-005

ID 0.147
OD 0.391
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6610-050

ID 0.343
OD 1.5
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6611-062

ID 0.204
OD 0.44
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6612-026

ID 0.12
OD 0.25
Thickness 0.026
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6613-060

ID 0.243
OD 0.462
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6614-028

ID 0.203
OD 0.498
Thickness 0.028
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6615-030

ID 0.638
OD 1.104
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6616-063

ID 0.398
OD 1.377
Thickness 0.063
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6617-010

ID 1.374
OD 1.498
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6618-018

ID 0.094
OD 0.218
Thickness 0.018
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6619-011

ID 0.22
OD 0.393
Thickness 0.011
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-662-047

ID 0.147
OD 0.409
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6620-025

ID 0.384
OD 0.498
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6621-032

ID 0.175
OD 0.502
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6622-033

ID 0.314
OD 0.749
Thickness 0.033
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6623-101

ID 0.258
OD 0.867
Thickness 0.101
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6624-022

ID 0.799
OD 1.249
Thickness 0.022
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6625-059

ID 0.223
OD 1.253
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6626-010

ID 1.223
OD 1.369
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6627-025

ID 1.149
OD 1.423
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6628-159

ID 0.809
OD 1.471
Thickness 0.159
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.010
Quantity

650-6629-154

ID 0.984
OD 1.571
Thickness 0.154
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.010
Quantity

650-663-031

ID 0.147
OD 0.5
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6630-103

ID 0.408
OD 1.627
Thickness 0.103
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.010
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.