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ARP chromoly hex bolt, 5/16-18 x 4.500, in black oxide. This chromoly threaded fastener is intended for fabrication and assembly applications that call for a 5/16-18 thread and a 4.500 inch length. The hex head accepts standard wrenches for tightening during maintenance or custom fabrication, while the black oxide finish offers a subdued appearance for visible bolted connections.
ARP 5/16-18 X 4.500 hex black oxide bolts
