
ARP chromoly hex bolt, 5/16-18 x 4.750, finished in black oxide. Specified by its 5/16-18 thread and 4.750 inch shank, this chromoly fastener is suitable for fabrication, repair, and assembly work where an imperial-length bolt is needed. The hex head accommodates standard tools for installation in custom builds or maintenance tasks, and the black oxide finish keeps a consistent visual profile.
ARP 5/16-18 X 4.750 hex black oxide bolts