316 Stainless Steel Flat Washers - Marine-Grade Corrosion Resistance

316 stainless steel flat washers offer superior corrosion resistance compared to 304 grade, thanks to the addition of molybdenum, which provides enhanced protection against chlorides, seawater, and acidic environments. They are the preferred choice for marine, offshore, chemical processing, and pharmaceutical fastener applications.

Superior Washer & Gasket Corp manufactures 316 stainless steel flat washers in standard and custom sizes with ISO 9001:2015 certified quality management. We maintain inventory of 316 stainless washers for fast delivery and produce custom sizes to your dimensional requirements-all made in the U.S.A. with material certifications available.

  • 316 stainless steel with molybdenum for superior chloride resistance
  • Preferred grade for marine and chemical applications
  • Standard and custom 316 stainless flat washer sizes
  • ISO 9001:2015 certified quality control
  • Made in the U.S.A.; material certifications available

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Showing 101–150 of 477 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity Actions

380-173-010

ID 0.397
OD 0.734
Thickness 0.01
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-174-075

ID 0.408
OD 0.687
Thickness 0.075
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-174-090

ID 0.408
OD 0.687
Thickness 0.09
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-175-062

ID 0.408
OD 0.813
Thickness 0.062
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-176-064

ID 0.41
OD 0.613
Thickness 0.064
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-177-057

ID 0.41
OD 0.746
Thickness 0.057
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-178-046

ID 0.41
OD 0.878
Thickness 0.046
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-178-060

ID 0.41
OD 0.878
Thickness 0.06
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-179-061

ID 0.41
OD 0.999
Thickness 0.061
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-18-020

ID 0.093
OD 0.218
Thickness 0.02
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-180-060

ID 0.41
OD 1.123
Thickness 0.06
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-181-060

ID 0.41
OD 1.252
Thickness 0.06
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-182-047

ID 0.41
OD 1.5
Thickness 0.047
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-183-120

ID 0.41
OD 2.0
Thickness 0.12
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-184-048

ID 0.418
OD 0.75
Thickness 0.048
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-185-074

ID 0.437
OD 1.001
Thickness 0.074
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-185-084

ID 0.437
OD 1.001
Thickness 0.084
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-186-094

ID 0.441
OD 0.75
Thickness 0.094
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-187-050

ID 0.441
OD 0.88
Thickness 0.05
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-188-060

ID 0.441
OD 0.998
Thickness 0.06
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-189-019

ID 0.447
OD 0.744
Thickness 0.019
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-19-019

ID 0.093
OD 0.249
Thickness 0.019
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-190-063

ID 0.447
OD 1.746
Thickness 0.063
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-191-020

ID 0.457
OD 0.624
Thickness 0.02
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-191-029

ID 0.457
OD 0.624
Thickness 0.029
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-192-060

ID 0.457
OD 0.748
Thickness 0.06
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-193-063

ID 0.466
OD 0.875
Thickness 0.063
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-194-048

ID 0.472
OD 0.813
Thickness 0.048
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-195-058

ID 0.472
OD 0.939
Thickness 0.058
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-196-027

ID 0.489
OD 0.75
Thickness 0.027
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-197-049

ID 0.495
OD 0.687
Thickness 0.049
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-198-010

ID 0.504
OD 0.74
Thickness 0.01
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-199-075

ID 0.505
OD 1.25
Thickness 0.075
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-20-034

ID 0.095
OD 0.216
Thickness 0.034
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-200-032

ID 0.518
OD 0.685
Thickness 0.032
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-201-030

ID 0.519
OD 0.875
Thickness 0.03
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-202-050

ID 0.521
OD 0.875
Thickness 0.05
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-202-104

ID 0.521
OD 0.875
Thickness 0.104
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-203-063

ID 0.531
OD 1.061
Thickness 0.063
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-203-078

ID 0.531
OD 1.061
Thickness 0.078
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-203-104

ID 0.531
OD 1.061
Thickness 0.104
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-203-120

ID 0.531
OD 1.061
Thickness 0.12
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-204-082

ID 0.535
OD 0.74
Thickness 0.082
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-205-065

ID 0.535
OD 0.875
Thickness 0.065
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-206-078

ID 0.535
OD 1.0
Thickness 0.078
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-206-090

ID 0.535
OD 1.0
Thickness 0.09
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-206-125

ID 0.535
OD 1.0
Thickness 0.125
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-207-090

ID 0.535
OD 1.06
Thickness 0.09
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-208-077

ID 0.535
OD 1.118
Thickness 0.077
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

380-209-081

ID 0.535
OD 1.375
Thickness 0.081
Material 316 Stainless Steel
ID TOL +-.005
OD TOL +-.005
Quantity

Description