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

650-5511-060

ID 0.358
OD 1.18
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5512-060

ID 1.13
OD 1.376
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5513-187

ID 0.661
OD 1.686
Thickness 0.187
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5514-120

ID 0.204
OD 1.938
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5515-025

ID 0.081
OD 0.149
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5516-005

ID 0.227
OD 0.295
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5517-046

ID 0.173
OD 0.438
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5518-060

ID 0.329
OD 0.468
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5519-010

ID 0.0
OD 0.476
Thickness 0.01
Material Steel Low Carbon
ID TOL
OD TOL +-.005
Quantity

650-552-030

ID 0.139
OD 0.373
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5520-060

ID 0.258
OD 0.555
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5521-050

ID 0.365
OD 0.566
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5522-040

ID 0.363
OD 0.57
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5523-120

ID 0.253
OD 0.631
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5524-032

ID 0.414
OD 0.825
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5525-100

ID 0.173
OD 0.874
Thickness 0.1
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5526-082

ID 0.163
OD 0.953
Thickness 0.082
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5527-072

ID 0.175
OD 0.953
Thickness 0.072
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5528-078

ID 0.533
OD 1.069
Thickness 0.078
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5529-120

ID 0.505
OD 1.134
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-553-025

ID 0.139
OD 0.385
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5530-125

ID 0.348
OD 1.257
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5531-150

ID 0.637
OD 2.25
Thickness 0.15
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5532-032

ID 0.234
OD 0.527
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5533-048

ID 0.255
OD 1.17
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5534-015

ID 1.627
OD 2.508
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5535-020

ID 0.121
OD 0.214
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5536-050

ID 0.0
OD 0.372
Thickness 0.05
Material Steel Low Carbon
ID TOL
OD TOL +-.005
Quantity

650-5537-128

ID 0.41
OD 1.186
Thickness 0.128
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5538-120

ID 0.413
OD 1.187
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5539-060

ID 1.22
OD 1.566
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-554-050

ID 0.139
OD 0.44
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5540-074

ID 0.438
OD 1.748
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5541-002

ID 1.498
OD 1.811
Thickness 0.002
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5542-022

ID 1.264
OD 1.875
Thickness 0.022
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5543-120

ID 0.406
OD 2.122
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5544-050

ID 0.179
OD 0.499
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5545-025

ID 0.441
OD 0.689
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5546-025

ID 0.347
OD 0.696
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5547-031

ID 0.192
OD 0.734
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5548-030

ID 0.512
OD 0.741
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5549-090

ID 0.517
OD 0.932
Thickness 0.09
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-555-050

ID 0.139
OD 0.5
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5550-125

ID 0.259
OD 0.936
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5551-173

ID 0.53
OD 1.25
Thickness 0.173
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5552-120

ID 1.07
OD 2.001
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5553-176

ID 1.255
OD 2.747
Thickness 0.177
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5554-025

ID 0.0
OD 0.485
Thickness 0.025
Material Steel Low Carbon
ID TOL
OD TOL +-.005
Quantity

650-5555-100

ID 0.441
OD 1.625
Thickness 0.1
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5556-120

ID 2.127
OD 2.99
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.