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These ARP chromoly hex bolts are 5/16-24 x 0.560 with a black oxide finish, supplied for general fabrication and assembly tasks requiring high‑strength fasteners. The specification indicates a chromoly construction and a short overall length, making them suitable as replacement or service bolts where the size, thread pitch, and finish match the application needs without requiring additional modification.
ARP 5/16-24 x .560 Hex Black Oxide Bolts
