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ARP chromoly 5/16-18 x 1.125 12-point black oxide bolt is a chromoly-threaded fastener finished in black oxide to reduce surface reflectivity. The 12-point head offers multiple socket engagement angles for compact access, and the 5/16-18 x 1.125 size suits fabrication and assembly tasks where a catalog-specified chromoly bolt is required.
ARP 5/16-18 X 1.125 12pt black oxide bolts
