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

650-5461-007

ID 3.17
OD 3.503
Thickness 0.007
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5462-005

ID 3.562
OD 3.875
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5463-006

ID 3.855
OD 4.412
Thickness 0.006
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5464-093

ID 4.0
OD 5.0
Thickness 0.093
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5465-125

ID 4.0
OD 6.0
Thickness 0.125
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5466-015

ID 4.04
OD 4.678
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5467-003

ID 4.06
OD 4.68
Thickness 0.003
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5468-010

ID 4.625
OD 5.093
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5469-103

ID 5.244
OD 6.625
Thickness 0.103
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-547-018

ID 0.139
OD 0.227
Thickness 0.018
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5470-005

ID 6.125
OD 6.875
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5471-015

ID 7.98
OD 8.98
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5472-047

ID 0.312
OD 0.562
Thickness 0.047
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5479-050

ID 0.22
OD 0.436
Thickness 0.051
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-548-032

ID 0.139
OD 0.251
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5480-025

ID 0.099
OD 0.468
Thickness 0.025
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5481-090

ID 0.318
OD 0.622
Thickness 0.089
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5482-015

ID 0.534
OD 0.763
Thickness 0.015
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5483-060

ID 0.251
OD 0.816
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5484-060

ID 0.202
OD 0.874
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5485-032

ID 0.532
OD 0.875
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5486-048

ID 0.638
OD 1.059
Thickness 0.048
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5487-087

ID 0.751
OD 1.124
Thickness 0.087
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5488-090

ID 0.328
OD 1.374
Thickness 0.09
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5489-010

ID 0.533
OD 1.514
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-549-031

ID 0.139
OD 0.275
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5490-031

ID 0.627
OD 1.588
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5491-030

ID 0.633
OD 1.588
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5493-060

ID 0.319
OD 0.495
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5494-010

ID 0.517
OD 0.86
Thickness 0.01
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5495-020

ID 0.136
OD 0.312
Thickness 0.02
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5496-030

ID 0.193
OD 0.341
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5497-050

ID 0.263
OD 0.498
Thickness 0.05
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5497-060

ID 0.263
OD 0.498
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5498-060

ID 0.318
OD 0.5
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5499-031

ID 0.158
OD 0.62
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-55-030

ID 0.079
OD 0.186
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-550-027

ID 0.139
OD 0.312
Thickness 0.027
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5500-032

ID 0.144
OD 0.622
Thickness 0.032
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5501-062

ID 0.393
OD 0.686
Thickness 0.062
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5502-134

ID 0.532
OD 1.059
Thickness 0.131
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5503-031

ID 0.661
OD 1.218
Thickness 0.031
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5504-062

ID 0.815
OD 1.249
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5505-030

ID 0.764
OD 1.375
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5506-125

ID 0.532
OD 1.5
Thickness 0.128
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5507-060

ID 0.21
OD 0.627
Thickness 0.06
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5508-005

ID 0.317
OD 0.45
Thickness 0.005
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5509-040

ID 0.197
OD 0.811
Thickness 0.04
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-551-030

ID 0.139
OD 0.35
Thickness 0.03
Material Steel Low Carbon
ID TOL +-.005
OD TOL +-.005
Quantity

650-5510-060

ID 0.627
OD 1.001
Thickness 0.058
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.