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

815-303-062

ID 0.457
OD 0.868
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-304-080

ID 0.762
OD 1.016
Thickness 0.08
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-305-040

ID 0.392
OD 0.63
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-307-062

ID 0.317
OD 0.467
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-308-050

ID 0.25
OD 0.495
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-309-032

ID 0.39
OD 0.579
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-31-032

ID 0.129
OD 0.281
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-310-062

ID 0.385
OD 0.624
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-311-050

ID 0.541
OD 0.702
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-312-062

ID 0.562
OD 0.827
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-313-062

ID 0.322
OD 0.55
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-314-094

ID 0.313
OD 0.625
Thickness 0.094
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-315-032

ID 1.246
OD 1.512
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-316-031

ID 0.34
OD 0.561
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-317-025

ID 0.19
OD 0.751
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-318-126

ID 0.26
OD 0.627
Thickness 0.126
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-319-040

ID 0.203
OD 0.5
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-32-033

ID 0.129
OD 0.375
Thickness 0.033
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-320-032

ID 0.564
OD 0.823
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-321-050

ID 0.805
OD 1.013
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-322-093

ID 0.72
OD 1.06
Thickness 0.093
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-323-062

ID 0.525
OD 0.71
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-324-020

ID 0.0
OD 0.374
Thickness 0.02
Material Copper
ID TOL
OD TOL +-.005
Quantity

815-325-031

ID 0.407
OD 0.626
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-325-128

ID 0.906
OD 2.375
Thickness 0.128
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-326-062

ID 0.527
OD 0.724
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-327-021

ID 0.502
OD 0.749
Thickness 0.021
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-328-050

ID 0.408
OD 1.002
Thickness 0.05
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-329-032

ID 0.437
OD 1.122
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-33-011

ID 0.13
OD 0.309
Thickness 0.011
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-330-063

ID 0.283
OD 0.499
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-331-062

ID 0.331
OD 0.5
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-332-064

ID 0.327
OD 0.502
Thickness 0.064
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-333-032

ID 0.32
OD 0.532
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-334-056

ID 0.437
OD 0.532
Thickness 0.056
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-335-025

ID 0.533
OD 0.621
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-336-062

ID 0.221
OD 0.626
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-337-063

ID 0.44
OD 0.656
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-338-051

ID 0.41
OD 0.663
Thickness 0.051
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-339-062

ID 0.562
OD 0.78
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-34-023

ID 0.132
OD 0.257
Thickness 0.023
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-340-032

ID 0.605
OD 0.811
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-341-063

ID 0.666
OD 0.875
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-342-125

ID 0.69
OD 0.937
Thickness 0.125
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-343-064

ID 0.32
OD 0.749
Thickness 0.064
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-344-032

ID 0.173
OD 0.345
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-345-063

ID 0.396
OD 0.999
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-346-020

ID 0.501
OD 0.625
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-347-040

ID 0.468
OD 0.628
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-348-064

ID 0.397
OD 0.629
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.