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

650-5898-026

ID 0.384
OD 0.562
Thickness 0.026
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5899-031

ID 0.206
OD 0.625
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-59-018

ID 0.081
OD 0.185
Thickness 0.018
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-590-030

ID 0.142
OD 0.382
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5900-062

ID 0.409
OD 0.812
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5901-046

ID 0.534
OD 0.878
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5902-161

ID 0.534
OD 1.058
Thickness 0.161
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5903-046

ID 0.411
OD 1.108
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5904-030

ID 0.565
OD 1.121
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5905-128

ID 0.315
OD 1.248
Thickness 0.128
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5906-031

ID 0.783
OD 1.25
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5907-073

ID 0.442
OD 1.375
Thickness 0.073
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5908-119

ID 0.314
OD 1.498
Thickness 0.119
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5909-121

ID 0.345
OD 1.498
Thickness 0.121
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-591-032

ID 0.142
OD 0.389
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5910-046

ID 0.409
OD 1.5
Thickness 0.046
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5911-131

ID 0.534
OD 1.744
Thickness 0.131
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5912-029

ID 1.254
OD 1.874
Thickness 0.029
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5913-073

ID 1.506
OD 2.113
Thickness 0.073
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5914-135

ID 1.653
OD 2.142
Thickness 0.135
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5915-120

ID 0.348
OD 2.499
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5916-125

ID 1.81
OD 2.5
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5917-036

ID 0.127
OD 0.376
Thickness 0.036
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5918-051

ID 0.216
OD 0.498
Thickness 0.051
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5919-031

ID 0.189
OD 0.5
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-592-049

ID 0.142
OD 0.492
Thickness 0.049
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5920-040

ID 0.195
OD 0.5
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5921-032

ID 0.252
OD 0.556
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5922-118

ID 0.289
OD 0.563
Thickness 0.118
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5923-050

ID 0.273
OD 0.623
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5924-025

ID 0.253
OD 0.624
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5925-060

ID 0.413
OD 0.813
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5926-074

ID 0.417
OD 0.837
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5927-062

ID 0.51
OD 0.867
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5928-118

ID 0.252
OD 1.0
Thickness 0.118
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5929-101

ID 0.533
OD 1.0
Thickness 0.101
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-593-040

ID 0.142
OD 0.576
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5930-085

ID 0.662
OD 1.103
Thickness 0.085
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5931-244

ID 0.525
OD 1.245
Thickness 0.244
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5932-074

ID 0.908
OD 1.25
Thickness 0.074
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5933-010

ID 0.876
OD 1.375
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5934-050

ID 0.883
OD 1.497
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5935-179

ID 0.532
OD 1.5
Thickness 0.179
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5936-149

ID 0.722
OD 1.575
Thickness 0.149
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5937-121

ID 0.522
OD 2.001
Thickness 0.121
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5938-015

ID 1.624
OD 2.503
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5939-120

ID 0.657
OD 2.681
Thickness 0.12
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-594-040

ID 0.142
OD 0.748
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5940-021

ID 0.254
OD 0.362
Thickness 0.021
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5941-049

ID 0.251
OD 0.5
Thickness 0.049
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.