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

650-6300-062

ID 0.627
OD 0.745
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6301-062

ID 0.749
OD 0.907
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6302-060

ID 0.283
OD 1.122
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6303-022

ID 0.286
OD 0.516
Thickness 0.022
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6304-061

ID 0.203
OD 0.531
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6305-078

ID 0.223
OD 0.555
Thickness 0.078
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6306-075

ID 0.331
OD 0.625
Thickness 0.075
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6307-059

ID 0.393
OD 0.625
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6308-061

ID 0.195
OD 0.627
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6309-080

ID 0.0
OD 0.697
Thickness 0.08
Material Steel Low Carbon
ID TOL
OD TOL +-.005
Quantity

650-631-050

ID 0.144
OD 1.0
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6310-059

ID 0.348
OD 0.876
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6311-145

ID 0.534
OD 0.998
Thickness 0.145
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6312-064

ID 0.154
OD 1.0
Thickness 0.064
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6313-062

ID 0.47
OD 1.124
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6314-120

ID 0.347
OD 1.495
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6315-059

ID 0.382
OD 0.579
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6316-020

ID 0.39
OD 0.624
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6317-056

ID 0.265
OD 0.731
Thickness 0.056
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6318-048

ID 0.517
OD 0.999
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6319-058

ID 0.532
OD 1.062
Thickness 0.058
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-632-015

ID 0.145
OD 0.214
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6320-060

ID 0.388
OD 1.121
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6321-062

ID 0.387
OD 1.124
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6322-102

ID 0.812
OD 1.251
Thickness 0.102
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6323-015

ID 0.881
OD 1.267
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6324-158

ID 0.387
OD 1.603
Thickness 0.158
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6325-161

ID 0.39
OD 1.624
Thickness 0.161
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6326-074

ID 0.749
OD 1.753
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6327-012

ID 1.972
OD 2.405
Thickness 0.012
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6328-015

ID 1.813
OD 2.499
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6329-020

ID 0.148
OD 0.309
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-633-015

ID 0.145
OD 0.22
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6330-074

ID 0.381
OD 0.612
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6331-063

ID 0.534
OD 0.678
Thickness 0.063
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6332-075

ID 0.311
OD 0.748
Thickness 0.075
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6333-032

ID 0.453
OD 0.75
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6334-025

ID 0.517
OD 0.751
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6335-059

ID 0.533
OD 0.814
Thickness 0.059
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6336-037

ID 0.441
OD 0.879
Thickness 0.037
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6337-061

ID 0.475
OD 0.928
Thickness 0.061
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6338-026

ID 0.406
OD 1.379
Thickness 0.026
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6339-117

ID 1.105
OD 1.685
Thickness 0.117
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-634-046

ID 0.145
OD 0.224
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6340-130

ID 0.438
OD 1.773
Thickness 0.13
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6341-010

ID 1.782
OD 2.035
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6342-182

ID 1.261
OD 2.246
Thickness 0.182
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6343-021

ID 1.972
OD 2.405
Thickness 0.021
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6344-010

ID 1.972
OD 2.405
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-6345-015

ID 1.972
OD 2.405
Thickness 0.015
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.