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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 22301–22350 of 25,000+ products

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

630-3331

ID (MM) 4.343
OD (MM) 25.4
Thickness (MM) 2.286
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3332

ID (MM) 4.343
OD (MM) 25.4
Thickness (MM) 2.54
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3333

ID (MM) 4.343
OD (MM) 25.4
Thickness (MM) 3.175
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3334

ID (MM) 4.369
OD (MM) 5.563
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3335

ID (MM) 4.369
OD (MM) 7.01
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3336

ID (MM) 4.369
OD (MM) 7.899
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3337

ID (MM) 4.369
OD (MM) 8.89
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3338

ID (MM) 4.369
OD (MM) 9.474
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3339

ID (MM) 4.369
OD (MM) 9.5
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3340

ID (MM) 4.369
OD (MM) 9.5
Thickness (MM) 1.194
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3341

ID (MM) 4.369
OD (MM) 13.995
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3342

ID (MM) 4.369
OD (MM) 15.875
Thickness (MM) 1.6
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3343

ID (MM) 4.369
OD (MM) 17.323
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3344

ID (MM) 4.369
OD (MM) 28.55
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3345

ID (MM) 4.394
OD (MM) 6.248
Thickness (MM) 0.076
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3346

ID (MM) 4.394
OD (MM) 6.35
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3347

ID (MM) 4.394
OD (MM) 6.756
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3348

ID (MM) 4.394
OD (MM) 6.833
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3349

ID (MM) 4.394
OD (MM) 7.137
Thickness (MM) 0.635
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3350

ID (MM) 4.394
OD (MM) 7.569
Thickness (MM) 0.432
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3351

ID (MM) 4.394
OD (MM) 7.849
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3352

ID (MM) 4.394
OD (MM) 9.474
Thickness (MM) 1.473
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3353

ID (MM) 4.394
OD (MM) 9.576
Thickness (MM) 0.737
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3354

ID (MM) 4.394
OD (MM) 9.957
Thickness (MM) 1.6
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3355

ID (MM) 4.394
OD (MM) 10.16
Thickness (MM) 1.092
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3356

ID (MM) 4.394
OD (MM) 13.945
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3357

ID (MM) 4.394
OD (MM) 13.945
Thickness (MM) 1.524
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3358

ID (MM) 4.394
OD (MM) 13.97
Thickness (MM) 2.54
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3359

ID (MM) 4.394
OD (MM) 14.326
Thickness (MM) 0.762
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3360

ID (MM) 4.394
OD (MM) 15.875
Thickness (MM) 2.21
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3361

ID (MM) 4.394
OD (MM) 17.424
Thickness (MM) 0.508
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3362

ID (MM) 4.394
OD (MM) 19.05
Thickness (MM) 1.575
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3363

ID (MM) 4.394
OD (MM) 28.6
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3364

ID (MM) 4.42
OD (MM) 9.5
Thickness (MM) 1.143
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3365

ID (MM) 4.42
OD (MM) 10.338
Thickness (MM) 1.016
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3366

ID (MM) 4.42
OD (MM) 14.224
Thickness (MM) 0.051
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3367

ID (MM) 4.42
OD (MM) 15.875
Thickness (MM) 0.787
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3368

ID (MM) 4.42
OD (MM) 15.875
Thickness (MM) 1.499
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3369

ID (MM) 4.42
OD (MM) 18.999
Thickness (MM) 0.94
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3370

ID (MM) 4.445
OD (MM) 6.248
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3371

ID (MM) 4.445
OD (MM) 6.248
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3372

ID (MM) 4.445
OD (MM) 6.782
Thickness (MM) 0.406
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3373

ID (MM) 4.445
OD (MM) 6.807
Thickness (MM) 0.381
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3374

ID (MM) 4.445
OD (MM) 6.985
Thickness (MM) 0.559
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3375

ID (MM) 4.445
OD (MM) 7.087
Thickness (MM) 0.686
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3376

ID (MM) 4.445
OD (MM) 7.163
Thickness (MM) 0.864
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3377

ID (MM) 4.445
OD (MM) 7.391
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3378

ID (MM) 4.445
OD (MM) 7.518
Thickness (MM) 0.254
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3379

ID (MM) 4.445
OD (MM) 7.798
Thickness (MM) 0.813
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

630-3380

ID (MM) 4.445
OD (MM) 7.899
Thickness (MM) 0.127
Material Stainless Steel
ID MM TOL 0.127
OD MM TOL 0.127
Quantity