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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 22901–22950 of 25,000+ products

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

630-3931

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3932

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3933

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3934

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3935

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3936

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3937

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 1.981
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3938

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3939

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 2.54
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3940

ID (MM) 5.156
OD (MM) 25.4
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3941

ID (MM) 5.156
OD (MM) 28.575
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3942

ID (MM) 5.156
OD (MM) 28.575
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3943

ID (MM) 5.156
OD (MM) 28.575
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3944

ID (MM) 5.156
OD (MM) 28.575
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3945

ID (MM) 5.156
OD (MM) 30.15
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3946

ID (MM) 5.156
OD (MM) 31.75
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3947

ID (MM) 5.156
OD (MM) 31.75
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3948

ID (MM) 5.156
OD (MM) 31.75
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3949

ID (MM) 5.156
OD (MM) 31.75
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3950

ID (MM) 5.156
OD (MM) 34.925
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3951

ID (MM) 5.156
OD (MM) 34.925
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3952

ID (MM) 5.156
OD (MM) 34.925
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3953

ID (MM) 5.156
OD (MM) 34.925
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3954

ID (MM) 5.156
OD (MM) 38.1
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3955

ID (MM) 5.156
OD (MM) 38.1
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3956

ID (MM) 5.156
OD (MM) 38.1
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3957

ID (MM) 5.156
OD (MM) 38.1
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3958

ID (MM) 5.156
OD (MM) 41.275
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3959

ID (MM) 5.156
OD (MM) 41.275
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3960

ID (MM) 5.156
OD (MM) 41.275
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3961

ID (MM) 5.156
OD (MM) 41.275
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3962

ID (MM) 5.156
OD (MM) 44.45
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3963

ID (MM) 5.156
OD (MM) 44.45
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3964

ID (MM) 5.156
OD (MM) 44.45
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3965

ID (MM) 5.156
OD (MM) 44.45
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3966

ID (MM) 5.156
OD (MM) 47.625
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3967

ID (MM) 5.156
OD (MM) 47.625
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3968

ID (MM) 5.156
OD (MM) 47.625
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3969

ID (MM) 5.156
OD (MM) 47.625
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3970

ID (MM) 5.156
OD (MM) 50.8
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3971

ID (MM) 5.156
OD (MM) 50.8
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3972

ID (MM) 5.156
OD (MM) 50.8
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3973

ID (MM) 5.156
OD (MM) 50.8
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3974

ID (MM) 5.182
OD (MM) 6.223
Thickness (MM) 0.076
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3975

ID (MM) 5.182
OD (MM) 7.899
Thickness (MM) 0.838
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3976

ID (MM) 5.182
OD (MM) 8.179
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3977

ID (MM) 5.182
OD (MM) 8.255
Thickness (MM) 0.533
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3978

ID (MM) 5.182
OD (MM) 8.534
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3979

ID (MM) 5.182
OD (MM) 9.068
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3980

ID (MM) 5.182
OD (MM) 10.312
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity