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

650-5557-040

ID 0.184
OD 0.377
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5558-040

ID 0.278
OD 0.502
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5559-062

ID 0.27
OD 0.905
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-556-027

ID 0.14
OD 0.215
Thickness 0.027
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5560-030

ID 0.26
OD 0.936
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5561-062

ID 0.233
OD 0.47
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5562-060

ID 0.534
OD 2.5
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5563-074

ID 0.212
OD 0.434
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5564-134

ID 0.208
OD 0.588
Thickness 0.134
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5565-130

ID 0.212
OD 0.593
Thickness 0.13
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5566-114

ID 0.415
OD 0.748
Thickness 0.114
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5567-100

ID 0.47
OD 0.922
Thickness 0.1
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5568-175

ID 0.509
OD 1.022
Thickness 0.175
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5569-078

ID 0.492
OD 1.101
Thickness 0.078
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-557-025

ID 0.14
OD 0.228
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5570-187

ID 0.665
OD 1.258
Thickness 0.187
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5571-176

ID 0.829
OD 1.375
Thickness 0.176
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5572-130

ID 0.41
OD 1.386
Thickness 0.13
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5573-134

ID 0.415
OD 1.392
Thickness 0.134
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5574-150

ID 0.785
OD 1.625
Thickness 0.15
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5575-150

ID 0.911
OD 1.751
Thickness 0.15
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5576-060

ID 0.283
OD 2.996
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5577-062

ID 0.345
OD 3.0
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5578-012

ID 0.203
OD 0.39
Thickness 0.012
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5579-056

ID 0.157
OD 0.622
Thickness 0.056
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-558-031

ID 0.14
OD 0.252
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5580-016

ID 0.442
OD 0.662
Thickness 0.016
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5581-060

ID 0.36
OD 0.707
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5582-080

ID 0.283
OD 0.735
Thickness 0.08
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5583-060

ID 0.36
OD 0.873
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5584-060

ID 0.506
OD 0.875
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5585-109

ID 0.513
OD 1.076
Thickness 0.109
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5586-002

ID 0.765
OD 1.371
Thickness 0.002
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5587-178

ID 0.535
OD 1.495
Thickness 0.178
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5588-120

ID 0.683
OD 1.748
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5589-120

ID 0.656
OD 2.457
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-559-031

ID 0.14
OD 0.27
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5590-032

ID 0.128
OD 0.253
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5591-050

ID 0.266
OD 0.875
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5592-060

ID 0.407
OD 1.001
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5593-090

ID 0.668
OD 1.094
Thickness 0.09
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5594-018

ID 0.112
OD 0.281
Thickness 0.018
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5595-047

ID 0.198
OD 0.329
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5596-050

ID 0.22
OD 0.423
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5597-100

ID 0.253
OD 0.51
Thickness 0.1
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5598-120

ID 0.317
OD 0.671
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5599-047

ID 0.194
OD 0.753
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-56-018

ID 0.079
OD 0.191
Thickness 0.018
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-560-025

ID 0.14
OD 0.279
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5600-040

ID 0.166
OD 0.786
Thickness 0.04
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.