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About Washers
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Mil. Spec. Washers

Choose these washers for their adherence to strict military standards for material and construction.
18-8 stainless steel and 321 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic. Passivated 18-8 stainless steel washers have added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Passivated 18-8 Stainless Steel | ||||||||
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NAS1149 | ||||||||
1/2" | 0.515" | 0.875" | 0.028"-0.036" | Rockwell B70 | NAS1149-C0832R | 100 | 000000000 | 000000 |