Bulk 5/8"-11 Flat Head Socket Cap Screws – Alloy Steel, Black Oxide – Monster Bolts Washer Type_Flat Washers or shallow countersinks—and achieve a

or shallow countersinks—and achieve a more stable

rounded button head provides wide bearing surface and snag-free aesthetics—perfect for machinery

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Bulk Packaging: Sealed master cartons — perfect for trailer decks

Industrial Equipment: Ensures reliable fastening in corrosive or chemical-heavy environments

Bulk 5/8"-11 Flat Head Socket Cap Screws – Alloy Steel, Black Oxide – Monster Bolts Washer Type_Flat Washers or shallow countersinks—and achieve aMonster Overview: Tackle your toughest industrial projects with Bulk 5 8" 11 Flat Head Socket Cap Screws from Monster Bolts. Made from premium alloy steel and finished with a thermal black oxide coating, these fasteners deliver outstanding strength and a professional, flush finish. The 82 flat head design provides a smooth surface ideal for machinery, fixtures, and fabrication projects where appearance and reliability both matter. All Monster Bolts