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Flat Washers Black Oxide 18-8 Stainless Steel

Black Oxide Stainless Steel Flat Washers

Chemically Treated Black Oxide Stainless Steel Round Flat Washers

  • Black Oxide flat washers are used mostly on black tools
  • Commonly picked for their sleek black look
  • Used on gun and knife builds, and by car and motorcycle enthusiasts alike
  • Black Oxide Flat Washers are 18-8 stainless steel that are chemically treated to create their black oxide finish

Call our toll-free number for more options and information on Black Oxide Stainless Steel fasteners and custom orders: 866-573-0445

Flat Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Washer Thickness
#2 0.099" 0.250" 0.031"
#4 0.125" 0.312" 0.031"
#6 0.150" 0.312" 0.0375"
#8 0.174" 0.375" 0.031"
#10 0.203" 0.437" 0.062"
1/4" 0.281" 5/8" 0.050"
5/16" 0.343" 3/4" 0.050"
3/8" 0.406" 7/8" 0.050"
1/2" 0.531" 1-1/4" 0.062"
5/8" 0.687" 1-1/2" 0.078"
3/4" 0.812" 1-3/4" 0.109"
This item qualifies for FREE SHIPPING on orders $250+
Select Products Below See Product Specifications
NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Flat Washer Black Oxide 18-8 SS - #2 (0.099 ID x 0.250 OD x 1/32 Thick)
SKU #12290002
Flat Washer Black Oxide 18-8 SS - #2 (0.099 ID x 0.250 OD x 1/32 Thick)
SKU #12290002
1
 NA
25
 $5.00 (0.2/ea)
100
 $15.00 (0.15/ea)
1000
 $130.00 (0.13/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - #4 (0.125 ID x 0.312 OD x 1/32 Thick)
SKU #12290014
Flat Washer Black Oxide 18-8 SS - #4 (0.125 ID x 0.312 OD x 1/32 Thick)
SKU #12290014
1
 NA
25
 $5.00 (0.2/ea)
100
 $15.00 (0.15/ea)
1000
 $130.00 (0.13/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - #6 (0.149 ID x 0.375 OD x 1/32 Thick)
SKU #12290026
Flat Washer Black Oxide 18-8 SS - #6 (0.149 ID x 0.375 OD x 1/32 Thick)
SKU #12290026
1
 NA
25
 $5.50 (0.22/ea)
100
 $16.00 (0.16/ea)
1000
 $140.00 (0.14/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - #8 (0.174 ID x 0.375 OD x 1/32 Thick)
SKU #12290038
Flat Washer Black Oxide 18-8 SS - #8 (0.174 ID x 0.375 OD x 1/32 Thick)
SKU #12290038
1
 NA
25
 $5.50 (0.22/ea)
100
 $16.00 (0.16/ea)
1000
 $140.00 (0.14/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - #10 (0.203 ID x 0.437 OD x 1/16 Thick)
SKU #12290050
Flat Washer Black Oxide 18-8 SS - #10 (0.203 ID x 0.437 OD x 1/16 Thick)
SKU #12290050
1
 NA
25
 $6.25 (0.25/ea)
100
 $17.00 (0.17/ea)
1000
 $150.00 (0.15/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 1/4" (0.281 ID x 0.5/8 OD x .050 Thick)
SKU #12290062
Flat Washer Black Oxide 18-8 SS - 1/4" (0.281 ID x 0.5/8 OD x .050 Thick)
SKU #12290062
1
 NA
25
 $6.25 (0.25/ea)
100
 $19.00 (0.19/ea)
1000
 $160.00 (0.16/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 5/16" (0.343 ID x 0.3/4 OD x .050 Thick)
SKU #12290074
Flat Washer Black Oxide 18-8 SS - 5/16" (0.343 ID x 0.3/4 OD x .050 Thick)
SKU #12290074
1
 NA
25
 $7.25 (0.29/ea)
100
 $23.00 (0.23/ea)
1000
 $220.00 (0.22/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 3/8" (0.406 ID x 0.7/8 OD x .050 Thick)
SKU #12290086
Flat Washer Black Oxide 18-8 SS - 3/8" (0.406 ID x 0.7/8 OD x .050 Thick)
SKU #12290086
1
 NA
25
 $8.25 (0.33/ea)
100
 $27.00 (0.27/ea)
1000
 $240.00 (0.24/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 1/2" (0.53 ID x 1-1/4 OD x .062 Thick)
SKU #12290098
Flat Washer Black Oxide 18-8 SS - 1/2" (0.53 ID x 1-1/4 OD x .062 Thick)
SKU #12290098
1
 NA
25
 $12.75 (0.51/ea)
100
 $47.00 (0.47/ea)
1000
 $440.00 (0.44/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 5/8" (0.687 ID x 1-1/2 OD x .078 Thick)
SKU #12290110
Flat Washer Black Oxide 18-8 SS - 5/8" (0.687 ID x 1-1/2 OD x .078 Thick)
SKU #12290110
1
 $0.99 (0.99/ea)
25
 $23.75 (0.95/ea)
100
 $89.00 (0.89/ea)
1000
 $880.00 (0.88/ea)
Subtotal: $0.00 /
Flat Washer Black Oxide 18-8 SS - 3/4" (0.812 ID x 1-3/4 OD x .109 Thick)
SKU #12290122
Flat Washer Black Oxide 18-8 SS - 3/4" (0.812 ID x 1-3/4 OD x .109 Thick)
SKU #12290122
1
 $2.41 (2.41/ea)
25
 $59.75 (2.39/ea)
100
 $234.00 (2.34/ea)
1000
 $2,330.00 (2.33/ea)
Subtotal: $0.00 /
Product Specifications
Corrosion Resistant
Yes
Finish
Black Oxide
Grade
18-8
Material
Stainless Steel
System of Measurement (Unit)
Inch
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances

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