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The ARP chromoly bolt is a chromoly-threaded fastener sized 1/4-28 x 3.250 with a hex head and black oxide finish. It offers a specific long-length choice for assemblies that need that thread and reach. The hex head accepts standard wrenches or sockets for installation, supporting fabrication, repair, and maintenance scenarios where a chromoly fastener with a dark finish is appropriate.
ARP 1/4-28 x 3.250 hex black oxide bolts
