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ARP chromoly 5/16-24 x 4.000 12-point black oxide bolt is a single chromoly fastener finished in black oxide. The 12-point head accepts standard 12-point sockets and offers compact clearance for tight assemblies. Specify this bolt when a 5/16-24 thread and 4.000-inch length are needed for fabrication, repairs, or custom fastening tasks.
ARP 5/16-24 x 4.000 12pt black oxide bolts
