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

815-400-093

ID 0.685
OD 1.496
Thickness 0.093
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-401-094

ID 0.5
OD 0.81
Thickness 0.094
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-402-079

ID 0.63
OD 0.862
Thickness 0.079
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-403-125

ID 0.902
OD 1.298
Thickness 0.125
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-404-032

ID 0.314
OD 0.562
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-407-040

ID 1.34
OD 1.54
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-408-032

ID 0.321
OD 0.532
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-409-016

ID 0.253
OD 0.562
Thickness 0.016
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-41-012

ID 0.149
OD 0.347
Thickness 0.012
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-410-062

ID 0.628
OD 1.0
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-411-025

ID 0.869
OD 1.025
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-412-062

ID 0.316
OD 0.563
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-413-040

ID 0.415
OD 0.71
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-414-092

ID 0.822
OD 1.025
Thickness 0.092
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-415-062

ID 1.014
OD 1.311
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-416-062

ID 0.346
OD 0.56
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-417-020

ID 0.0
OD 0.565
Thickness 0.02
Material Copper
ID TOL
OD TOL +-.005
Quantity

815-418-020

ID 0.564
OD 0.688
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-419-050

ID 0.886
OD 1.112
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-42-025

ID 0.156
OD 0.308
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-420-093

ID 1.002
OD 1.25
Thickness 0.093
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-421-090

ID 0.486
OD 0.717
Thickness 0.09
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-422-040

ID 0.563
OD 0.851
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-423-034

ID 0.309
OD 0.603
Thickness 0.034
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-424-020

ID 0.401
OD 0.696
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-425-080

ID 0.414
OD 0.811
Thickness 0.08
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-426-032

ID 0.127
OD 0.39
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-427-031

ID 0.476
OD 0.69
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-428-080

ID 1.043
OD 1.279
Thickness 0.08
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-429-032

ID 0.234
OD 0.375
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-43-025

ID 0.156
OD 0.31
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-430-031

ID 0.252
OD 0.391
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-431-032

ID 0.201
OD 0.312
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-432-061

ID 0.319
OD 0.5
Thickness 0.061
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-433-062

ID 0.381
OD 0.626
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-434-063

ID 0.407
OD 0.813
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-435-063

ID 0.502
OD 0.813
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-436-125

ID 0.752
OD 1.97
Thickness 0.125
Material Copper
ID TOL +-.005
OD TOL +-.010
Quantity

815-44-020

ID 0.156
OD 0.504
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-45-040

ID 0.158
OD 0.26
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-46-062

ID 0.16
OD 0.329
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-47-039

ID 0.166
OD 0.292
Thickness 0.039
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-48-039

ID 0.167
OD 0.29
Thickness 0.039
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-49-033

ID 0.167
OD 0.311
Thickness 0.033
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-50-040

ID 0.171
OD 0.411
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-51-019

ID 0.173
OD 0.252
Thickness 0.019
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-52-082

ID 0.188
OD 0.343
Thickness 0.082
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-53-041

ID 0.188
OD 0.438
Thickness 0.041
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-54-050

ID 0.189
OD 0.438
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-55-064

ID 0.189
OD 0.501
Thickness 0.064
Material Copper
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.