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Optimas Parts Imperial Blog Series: Technical Insight Into Hardened and Unhardened Flat Washers - Optimas
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Hillman 1/2-in Hot-dipped Galvanized Standard Flat Washer in the Flat Washers department at Lowes.com
![Made in USA - 5/16" Screw High-Temperature Flat Washer: Grade A286 Stainless Steel, Plain Finish - 19261346 - MSC Industrial Supply Made in USA - 5/16" Screw High-Temperature Flat Washer: Grade A286 Stainless Steel, Plain Finish - 19261346 - MSC Industrial Supply](https://cdn.mscdirect.com/global/images/ProductImages/1926134-21.jpg)
Made in USA - 5/16" Screw High-Temperature Flat Washer: Grade A286 Stainless Steel, Plain Finish - 19261346 - MSC Industrial Supply
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