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The ARP chromoly 1/4-28 x 0.515-inch 12-point bolt features a black oxide finish and serves as a threaded fastener for fabrication and general assembly. Its 12-point head is sized for 12-point sockets, and the chromoly construction maintains consistent thread sizing and finish. Use where 1/4-28 hardware with a protective black-oxide surface is required.
ARP 1/4-28 x .515 12pt black oxide bolts
