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Flat Washers in Every Size, Material & Tolerance

Flat washers are essential components in fastener assemblies, distributing load evenly across mating surfaces to prevent wear, protect finishes, and ensure joint integrity. As a leading flat washer manufacturer, Superior Washer & Gasket Corp supplies standard washers, large flat washers, and custom flat washers in aluminum, brass, copper, stainless steel, carbon steel, and nylon-manufactured to your exact specifications.

Our ISO 9001:2015 certified quality management system guarantees consistent dimensional accuracy across every order, from prototype quantities to high-volume production runs. Whether you need special flat washers for a unique application or mil-spec flat washers for aerospace and defense, we deliver reliable solutions made in the U.S.A.

  • Standard and custom flat washer sizes in stock
  • Wide selection of materials including stainless steel, brass, aluminum, and nylon
  • ISO 9001:2015 certified manufacturing and quality control
  • Custom flat washers produced to print or sample
  • Competitive pricing with fast turnaround

Showing 23001–23050 of 25,000+ products

SKU ID (MM) OD (MM) Thickness (MM) Material ID MM TOL OD MM TOL Quantity

630-4031

ID (MM) 5.232
OD (MM) 10.414
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4032

ID (MM) 5.232
OD (MM) 11.151
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4033

ID (MM) 5.232
OD (MM) 12.675
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4034

ID (MM) 5.232
OD (MM) 12.7
Thickness (MM) 1.448
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4035

ID (MM) 5.232
OD (MM) 12.725
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4036

ID (MM) 5.232
OD (MM) 13.843
Thickness (MM) 1.143
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4037

ID (MM) 5.232
OD (MM) 15.519
Thickness (MM) 0.686
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4038

ID (MM) 5.232
OD (MM) 15.799
Thickness (MM) 1.448
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4039

ID (MM) 5.232
OD (MM) 15.9
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4040

ID (MM) 5.232
OD (MM) 17.45
Thickness (MM) 0.965
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4041

ID (MM) 5.232
OD (MM) 17.45
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4042

ID (MM) 5.232
OD (MM) 18.999
Thickness (MM) 0.838
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4043

ID (MM) 5.232
OD (MM) 19.05
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4044

ID (MM) 5.232
OD (MM) 19.05
Thickness (MM) 2.972
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4045

ID (MM) 5.232
OD (MM) 19.101
Thickness (MM) 0.864
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4046

ID (MM) 5.232
OD (MM) 26.873
Thickness (MM) 0.457
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4047

ID (MM) 5.232
OD (MM) 28.575
Thickness (MM) 1.6
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4048

ID (MM) 5.232
OD (MM) 31.699
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4049

ID (MM) 5.258
OD (MM) 6.248
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4050

ID (MM) 5.258
OD (MM) 9.652
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4051

ID (MM) 5.258
OD (MM) 9.703
Thickness (MM) 1.245
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4052

ID (MM) 5.258
OD (MM) 10.287
Thickness (MM) 0.991
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4053

ID (MM) 5.258
OD (MM) 10.541
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4054

ID (MM) 5.258
OD (MM) 11.201
Thickness (MM) 1.422
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4055

ID (MM) 5.258
OD (MM) 12.7
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4056

ID (MM) 5.258
OD (MM) 14.249
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4057

ID (MM) 5.258
OD (MM) 15.494
Thickness (MM) 0.483
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4058

ID (MM) 5.258
OD (MM) 15.824
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4059

ID (MM) 5.258
OD (MM) 16.358
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4060

ID (MM) 5.258
OD (MM) 17.399
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4061

ID (MM) 5.258
OD (MM) 17.45
Thickness (MM) 0.737
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4062

ID (MM) 5.258
OD (MM) 17.45
Thickness (MM) 0.889
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4063

ID (MM) 5.258
OD (MM) 17.551
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4064

ID (MM) 5.258
OD (MM) 17.856
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4065

ID (MM) 5.258
OD (MM) 25.375
Thickness (MM) 1.041
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4066

ID (MM) 5.258
OD (MM) 25.4
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4067

ID (MM) 5.258
OD (MM) 28.55
Thickness (MM) 1.219
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4068

ID (MM) 5.258
OD (MM) 30.099
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4069

ID (MM) 5.258
OD (MM) 30.302
Thickness (MM) 1.6
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4070

ID (MM) 5.283
OD (MM) 7.798
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4071

ID (MM) 5.283
OD (MM) 7.823
Thickness (MM) 0.076
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4072

ID (MM) 5.283
OD (MM) 7.823
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4073

ID (MM) 5.283
OD (MM) 9.449
Thickness (MM) 0.533
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4074

ID (MM) 5.283
OD (MM) 10.16
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4075

ID (MM) 5.283
OD (MM) 10.693
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4076

ID (MM) 5.283
OD (MM) 10.871
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4077

ID (MM) 5.283
OD (MM) 11.074
Thickness (MM) 1.626
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4078

ID (MM) 5.283
OD (MM) 11.887
Thickness (MM) 1.219
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4079

ID (MM) 5.283
OD (MM) 12.573
Thickness (MM) 1.041
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4080

ID (MM) 5.283
OD (MM) 12.7
Thickness (MM) 0.889
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity