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

940-16-010

ID 0.131
OD 0.336
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-17-010

ID 0.145
OD 0.249
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-18-010

ID 0.147
OD 0.248
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-19-010

ID 0.149
OD 0.297
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-20-007

ID 0.152
OD 0.301
Thickness 0.007
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-21-005

ID 0.155
OD 0.373
Thickness 0.005
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-22-010

ID 0.159
OD 0.28
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-23-005

ID 0.16
OD 0.312
Thickness 0.005
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-24-003

ID 0.161
OD 0.314
Thickness 0.003
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-25-010

ID 0.168
OD 0.437
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-26-010

ID 0.17
OD 0.28
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-27-002

ID 0.179
OD 0.372
Thickness 0.002
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-28-005

ID 0.191
OD 0.626
Thickness 0.005
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-29-005

ID 0.196
OD 0.537
Thickness 0.005
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-30-010

ID 0.197
OD 0.537
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-31-003

ID 0.198
OD 0.403
Thickness 0.003
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-32-010

ID 0.206
OD 0.373
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-33-010

ID 0.22
OD 0.375
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-34-007

ID 0.253
OD 0.31
Thickness 0.007
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-35-010

ID 0.253
OD 0.496
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-36-010

ID 0.3
OD 0.931
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-37-010

ID 0.313
OD 0.873
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-38-010

ID 0.329
OD 0.644
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-39-010

ID 0.337
OD 0.498
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-40-010

ID 0.341
OD 0.931
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-41-010

ID 0.342
OD 0.561
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-42-010

ID 0.343
OD 0.497
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-43-010

ID 0.407
OD 0.484
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-44-010

ID 0.508
OD 1.06
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-45-010

ID 0.95
OD 1.212
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-46-010

ID 0.132
OD 0.436
Thickness 0.01
Material Mylar
ID TOL +-.005
OD TOL +-.005
Quantity

940-47-014

ID 0.1
OD 0.187
Thickness 0.014
Material Mylar
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.