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ARP 5/16-24 x 2.875 12‑point black oxide chromoly bolts supply a 2.875" length with 5/16-24 thread and a 12‑point head, described as chromoly in a black oxide finish. This fastener matches installations that call for that precise thread pitch, bolt length, and 12‑point head style to achieve correct engagement and seating.
ARP 5/16-24 x 2.875 12pt black oxide bolts
