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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 22951–23000 of 25,000+ products

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

630-3981

ID (MM) 5.182
OD (MM) 11.024
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3982

ID (MM) 5.182
OD (MM) 11.786
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3983

ID (MM) 5.182
OD (MM) 12.573
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3984

ID (MM) 5.182
OD (MM) 12.649
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3985

ID (MM) 5.182
OD (MM) 12.7
Thickness (MM) 1.143
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3986

ID (MM) 5.182
OD (MM) 13.564
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3987

ID (MM) 5.182
OD (MM) 14.3
Thickness (MM) 0.711
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3988

ID (MM) 5.182
OD (MM) 14.478
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3989

ID (MM) 5.182
OD (MM) 14.986
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3990

ID (MM) 5.182
OD (MM) 15.748
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3991

ID (MM) 5.182
OD (MM) 15.875
Thickness (MM) 1.397
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3992

ID (MM) 5.182
OD (MM) 16.129
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3993

ID (MM) 5.182
OD (MM) 17.475
Thickness (MM) 0.914
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3994

ID (MM) 5.182
OD (MM) 18.542
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3995

ID (MM) 5.182
OD (MM) 18.898
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3996

ID (MM) 5.182
OD (MM) 19.075
Thickness (MM) 0.61
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3997

ID (MM) 5.182
OD (MM) 19.075
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3998

ID (MM) 5.182
OD (MM) 25.349
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3999

ID (MM) 5.182
OD (MM) 33.299
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4000

ID (MM) 5.182
OD (MM) 39.649
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4001

ID (MM) 5.207
OD (MM) 6.223
Thickness (MM) 0.076
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4002

ID (MM) 5.207
OD (MM) 6.35
Thickness (MM) 0.279
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4003

ID (MM) 5.207
OD (MM) 10.312
Thickness (MM) 0.914
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4004

ID (MM) 5.207
OD (MM) 11.074
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4005

ID (MM) 5.207
OD (MM) 11.074
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4006

ID (MM) 5.207
OD (MM) 11.303
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4007

ID (MM) 5.207
OD (MM) 11.328
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4008

ID (MM) 5.207
OD (MM) 12.573
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4009

ID (MM) 5.207
OD (MM) 12.649
Thickness (MM) 3.048
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4010

ID (MM) 5.207
OD (MM) 12.7
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4011

ID (MM) 5.207
OD (MM) 12.7
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4012

ID (MM) 5.207
OD (MM) 14.249
Thickness (MM) 0.889
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4013

ID (MM) 5.207
OD (MM) 14.249
Thickness (MM) 1.245
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4014

ID (MM) 5.207
OD (MM) 14.986
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4015

ID (MM) 5.207
OD (MM) 15.519
Thickness (MM) 0.533
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4016

ID (MM) 5.207
OD (MM) 15.824
Thickness (MM) 2.921
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4017

ID (MM) 5.207
OD (MM) 16.002
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4018

ID (MM) 5.207
OD (MM) 16.459
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4019

ID (MM) 5.207
OD (MM) 25.425
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4020

ID (MM) 5.207
OD (MM) 28.575
Thickness (MM) 1.245
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4021

ID (MM) 5.207
OD (MM) 33.274
Thickness (MM) 0.432
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4022

ID (MM) 5.232
OD (MM) 7.214
Thickness (MM) 0.533
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4023

ID (MM) 5.232
OD (MM) 7.391
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4024

ID (MM) 5.232
OD (MM) 7.772
Thickness (MM) 0.61
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4025

ID (MM) 5.232
OD (MM) 7.874
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4026

ID (MM) 5.232
OD (MM) 8.687
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4027

ID (MM) 5.232
OD (MM) 9.423
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4028

ID (MM) 5.232
OD (MM) 9.677
Thickness (MM) 0.991
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4029

ID (MM) 5.232
OD (MM) 9.982
Thickness (MM) 1.219
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-4030

ID (MM) 5.232
OD (MM) 10.312
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity