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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 22351–22400 of 25,000+ products

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

630-3381

ID (MM) 4.445
OD (MM) 7.925
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3382

ID (MM) 4.445
OD (MM) 8.687
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3383

ID (MM) 4.445
OD (MM) 8.941
Thickness (MM) 1.88
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3384

ID (MM) 4.445
OD (MM) 9.525
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3385

ID (MM) 4.445
OD (MM) 11.074
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3386

ID (MM) 4.445
OD (MM) 11.328
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3387

ID (MM) 4.445
OD (MM) 14.046
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3388

ID (MM) 4.445
OD (MM) 15.9
Thickness (MM) 1.245
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3389

ID (MM) 4.445
OD (MM) 22.225
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3390

ID (MM) 4.445
OD (MM) 34.925
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3391

ID (MM) 4.47
OD (MM) 9.55
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3392

ID (MM) 4.47
OD (MM) 11.887
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3393

ID (MM) 4.47
OD (MM) 12.141
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3394

ID (MM) 4.47
OD (MM) 12.294
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3395

ID (MM) 4.47
OD (MM) 14.224
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3396

ID (MM) 4.47
OD (MM) 15.748
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3397

ID (MM) 4.496
OD (MM) 9.525
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3398

ID (MM) 4.496
OD (MM) 9.525
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3399

ID (MM) 4.496
OD (MM) 9.55
Thickness (MM) 1.6
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3400

ID (MM) 4.496
OD (MM) 15.9
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3401

ID (MM) 4.496
OD (MM) 15.926
Thickness (MM) 0.914
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3402

ID (MM) 4.496
OD (MM) 19.025
Thickness (MM) 2.997
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3403

ID (MM) 4.521
OD (MM) 6.553
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3404

ID (MM) 4.521
OD (MM) 6.655
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3405

ID (MM) 4.521
OD (MM) 6.731
Thickness (MM) 0.66
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3406

ID (MM) 4.521
OD (MM) 7.518
Thickness (MM) 0.889
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3407

ID (MM) 4.521
OD (MM) 7.696
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3408

ID (MM) 4.521
OD (MM) 7.823
Thickness (MM) 1.27
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3409

ID (MM) 4.521
OD (MM) 7.925
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3410

ID (MM) 4.521
OD (MM) 9.474
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3411

ID (MM) 4.521
OD (MM) 9.677
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3412

ID (MM) 4.521
OD (MM) 10.744
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3413

ID (MM) 4.521
OD (MM) 12.878
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3414

ID (MM) 4.521
OD (MM) 14.224
Thickness (MM) 1.448
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3415

ID (MM) 4.521
OD (MM) 19.101
Thickness (MM) 0.838
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3416

ID (MM) 4.572
OD (MM) 5.867
Thickness (MM) 0.152
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3417

ID (MM) 4.572
OD (MM) 10.617
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3418

ID (MM) 4.572
OD (MM) 12.7
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3419

ID (MM) 4.572
OD (MM) 12.7
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3420

ID (MM) 4.572
OD (MM) 12.7
Thickness (MM) 1.041
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3421

ID (MM) 4.572
OD (MM) 16.586
Thickness (MM) 1.549
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3422

ID (MM) 4.572
OD (MM) 25.425
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3423

ID (MM) 4.572
OD (MM) 28.524
Thickness (MM) 1.905
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3424

ID (MM) 4.572
OD (MM) 38.125
Thickness (MM) 1.88
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3425

ID (MM) 4.597
OD (MM) 6.045
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3426

ID (MM) 4.597
OD (MM) 7.01
Thickness (MM) 0.076
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3427

ID (MM) 4.597
OD (MM) 7.163
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3428

ID (MM) 4.597
OD (MM) 7.925
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3429

ID (MM) 4.597
OD (MM) 16.078
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3430

ID (MM) 4.597
OD (MM) 21.895
Thickness (MM) 0.94
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity