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

650-644-061

ID 0.145
OD 0.751
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-645-021

ID 0.146
OD 0.229
Thickness 0.021
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-646-087

ID 0.146
OD 0.296
Thickness 0.087
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-647-031

ID 0.146
OD 0.311
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-648-040

ID 0.146
OD 0.316
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-649-061

ID 0.146
OD 0.325
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-65-020

ID 0.082
OD 0.307
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-650-040

ID 0.146
OD 0.343
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-651-040

ID 0.146
OD 0.371
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-652-040

ID 0.146
OD 0.421
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-653-031

ID 0.146
OD 0.437
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-654-060

ID 0.146
OD 0.516
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-655-050

ID 0.146
OD 0.719
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6553-061

ID 0.254
OD 1.25
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6554-121

ID 1.061
OD 1.436
Thickness 0.121
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6555-123

ID 0.535
OD 2.587
Thickness 0.123
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6556-062

ID 1.19
OD 2.749
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6557-052

ID 0.163
OD 0.252
Thickness 0.052
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6558-030

ID 0.133
OD 0.312
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6559-043

ID 0.142
OD 0.438
Thickness 0.043
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-656-060

ID 0.147
OD 0.248
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6560-036

ID 0.191
OD 0.438
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6561-026

ID 0.383
OD 0.501
Thickness 0.026
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6562-047

ID 0.19
OD 0.75
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6563-079

ID 0.504
OD 0.874
Thickness 0.079
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6564-059

ID 0.189
OD 0.875
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6565-181

ID 0.439
OD 0.998
Thickness 0.181
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6566-076

ID 0.33
OD 1.0
Thickness 0.076
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6567-048

ID 0.381
OD 1.001
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6568-114

ID 0.754
OD 1.249
Thickness 0.114
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6569-046

ID 0.347
OD 1.25
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-657-020

ID 0.147
OD 0.25
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6570-058

ID 1.282
OD 2.0
Thickness 0.058
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6571-020

ID 1.378
OD 2.0
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6572-127

ID 1.302
OD 2.191
Thickness 0.127
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6573-102

ID 2.03
OD 2.752
Thickness 0.102
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6574-025

ID 0.135
OD 0.28
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6575-025

ID 0.131
OD 0.282
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6576-032

ID 0.183
OD 0.354
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6577-015

ID 0.172
OD 0.375
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6578-060

ID 0.196
OD 0.438
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6579-039

ID 0.18
OD 0.491
Thickness 0.039
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-658-031

ID 0.147
OD 0.255
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6580-060

ID 0.402
OD 0.75
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6581-060

ID 0.756
OD 1.122
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6582-125

ID 0.501
OD 1.248
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6583-060

ID 0.378
OD 1.249
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6584-176

ID 0.754
OD 1.249
Thickness 0.176
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6585-125

ID 0.416
OD 1.376
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6586-120

ID 0.521
OD 1.502
Thickness 0.12
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.