ARP chromoly 1/4-28 x 0.625 hex bolt with black oxide finish. This hex-head bolt is listed with a 1/4-28 thread and 0.625-inch length, supplied with a black oxide surface treatment. It serves as a fabrication-grade fastener for applications calling for that thread and length specification and is intended for use wherever a matching 1/4-28 chromoly hex bolt is required.
ARP 1/4-28 X 0.625 Hex Black Oxide Bolts