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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" | 0.031" |
| 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" |
See Product Specifications
NA = "Not Sold In Single Quantity"
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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
