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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 1501–1550 of 25,000+ products

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

260-3358

ID (MM) 4.521
OD (MM) 9.906
Thickness (MM) 1.258
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3359

ID (MM) 4.521
OD (MM) 11.1
Thickness (MM) 1.41
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3360

ID (MM) 4.521
OD (MM) 12.7
Thickness (MM) 1.613
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3361

ID (MM) 4.521
OD (MM) 15.875
Thickness (MM) 2.016
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3362

ID (MM) 4.547
OD (MM) 12.675
Thickness (MM) 1.61
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3363

ID (MM) 4.699
OD (MM) 7.925
Thickness (MM) 1.006
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3364

ID (MM) 4.75
OD (MM) 6.731
Thickness (MM) 0.855
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3365

ID (MM) 4.75
OD (MM) 7.925
Thickness (MM) 1.006
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3366

ID (MM) 4.75
OD (MM) 7.925
Thickness (MM) 1.006
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3367

ID (MM) 4.75
OD (MM) 9.525
Thickness (MM) 1.21
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3368

ID (MM) 4.75
OD (MM) 9.525
Thickness (MM) 1.21
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3369

ID (MM) 4.75
OD (MM) 10.312
Thickness (MM) 1.31
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3370

ID (MM) 4.75
OD (MM) 11.1
Thickness (MM) 1.41
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3371

ID (MM) 4.75
OD (MM) 12.7
Thickness (MM) 1.613
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3372

ID (MM) 4.75
OD (MM) 13.487
Thickness (MM) 1.713
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3373

ID (MM) 4.75
OD (MM) 14.275
Thickness (MM) 1.813
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3374

ID (MM) 4.75
OD (MM) 15.392
Thickness (MM) 1.955
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3375

ID (MM) 4.75
OD (MM) 15.875
Thickness (MM) 2.016
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3376

ID (MM) 4.75
OD (MM) 19.05
Thickness (MM) 2.419
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3377

ID (MM) 4.75
OD (MM) 25.4
Thickness (MM) 3.226
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3378

ID (MM) 4.75
OD (MM) 34.925
Thickness (MM) 4.435
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3379

ID (MM) 4.75
OD (MM) 45.237
Thickness (MM) 5.745
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3380

ID (MM) 4.775
OD (MM) 12.649
Thickness (MM) 1.606
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3381

ID (MM) 4.826
OD (MM) 7.95
Thickness (MM) 1.01
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3382

ID (MM) 4.851
OD (MM) 25.476
Thickness (MM) 3.235
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3383

ID (MM) 4.902
OD (MM) 19.177
Thickness (MM) 2.435
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3384

ID (MM) 4.928
OD (MM) 6.35
Thickness (MM) 0.806
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3385

ID (MM) 4.928
OD (MM) 7.01
Thickness (MM) 0.89
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3386

ID (MM) 4.928
OD (MM) 7.137
Thickness (MM) 0.906
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3387

ID (MM) 4.928
OD (MM) 7.925
Thickness (MM) 1.006
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3388

ID (MM) 4.928
OD (MM) 8.712
Thickness (MM) 1.106
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3389

ID (MM) 4.928
OD (MM) 8.712
Thickness (MM) 1.106
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3390

ID (MM) 4.928
OD (MM) 8.915
Thickness (MM) 1.132
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3391

ID (MM) 4.928
OD (MM) 9.525
Thickness (MM) 1.21
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3392

ID (MM) 4.928
OD (MM) 11.1
Thickness (MM) 1.41
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3393

ID (MM) 4.928
OD (MM) 11.659
Thickness (MM) 1.481
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3394

ID (MM) 4.928
OD (MM) 12.7
Thickness (MM) 1.613
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3395

ID (MM) 4.928
OD (MM) 14.275
Thickness (MM) 1.813
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3396

ID (MM) 4.928
OD (MM) 15.875
Thickness (MM) 2.016
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3397

ID (MM) 4.928
OD (MM) 17.45
Thickness (MM) 2.216
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3398

ID (MM) 4.928
OD (MM) 19.05
Thickness (MM) 2.419
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3399

ID (MM) 4.953
OD (MM) 12.751
Thickness (MM) 1.619
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3400

ID (MM) 4.978
OD (MM) 7.976
Thickness (MM) 1.013
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3401

ID (MM) 4.978
OD (MM) 10.922
Thickness (MM) 1.387
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3402

ID (MM) 4.978
OD (MM) 11.303
Thickness (MM) 1.435
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3403

ID (MM) 5.004
OD (MM) 38.1
Thickness (MM) 4.839
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3404

ID (MM) 5.029
OD (MM) 12.751
Thickness (MM) 1.619
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3405

ID (MM) 5.055
OD (MM) 11.151
Thickness (MM) 1.416
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3406

ID (MM) 5.08
OD (MM) 7.925
Thickness (MM) 1.006
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity

260-3407

ID (MM) 5.08
OD (MM) 8.712
Thickness (MM) 1.106
Material Nylon
ID MM TOL 0.127
OD MM TOL 0.127
Quantity