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

650-6391-116

ID 0.3786
OD 1.218
Thickness 0.116
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6392-062

ID 0.765
OD 1.248
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6393-118

ID 0.403
OD 1.372
Thickness 0.118
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6394-151

ID 0.815
OD 1.472
Thickness 0.151
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6395-089

ID 0.406
OD 1.499
Thickness 0.089
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6396-016

ID 0.878
OD 1.502
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6397-121

ID 0.523
OD 1.503
Thickness 0.121
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6398-125

ID 0.69
OD 1.94
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6399-048

ID 2.399
OD 3.524
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-64-016

ID 0.082
OD 0.25
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-640-016

ID 0.145
OD 0.375
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6400-077

ID 1.693
OD 3.617
Thickness 0.077
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6401-048

ID 3.08
OD 4.505
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6402-060

ID 0.188
OD 0.436
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6403-040

ID 0.158
OD 0.437
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6404-076

ID 0.533
OD 1.065
Thickness 0.076
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6405-031

ID 0.266
OD 0.626
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6406-058

ID 0.407
OD 0.646
Thickness 0.058
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6407-072

ID 0.355
OD 0.725
Thickness 0.072
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6408-074

ID 0.354
OD 0.749
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6409-022

ID 0.193
OD 0.561
Thickness 0.022
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-641-040

ID 0.145
OD 0.379
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6410-062

ID 0.637
OD 0.871
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6411-036

ID 0.237
OD 0.525
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6412-060

ID 0.185
OD 0.621
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6413-062

ID 0.201
OD 0.94
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6414-099

ID 0.819
OD 2.005
Thickness 0.099
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6415-060

ID 1.378
OD 2.247
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6416-057

ID 1.785
OD 2.816
Thickness 0.057
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6417-056

ID 0.875
OD 1.75
Thickness 0.056
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6418-120

ID 0.285
OD 1.997
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6419-057

ID 0.239
OD 0.785
Thickness 0.057
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-642-047

ID 0.145
OD 0.504
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6420-012

ID 0.193
OD 0.289
Thickness 0.012
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6421-047

ID 0.222
OD 0.333
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6422-032

ID 0.38
OD 0.53
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6423-032

ID 0.17
OD 0.498
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6424-032

ID 0.188
OD 0.438
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6425-048

ID 0.156
OD 0.374
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6426-057

ID 0.197
OD 0.374
Thickness 0.057
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6427-010

ID 0.128
OD 0.381
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6428-031

ID 0.621
OD 1.108
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6429-003

ID 0.711
OD 1.174
Thickness 0.003
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-643-061

ID 0.145
OD 0.568
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6430-060

ID 0.265
OD 0.562
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6431-016

ID 0.504
OD 0.625
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6432-063

ID 0.385
OD 0.627
Thickness 0.063
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6434-039

ID 0.172
OD 0.312
Thickness 0.039
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6435-030

ID 0.17
OD 0.377
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6436-043

ID 0.221
OD 0.42
Thickness 0.043
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.