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The ARP 1/2-20 x 4.000 chromoly bolt provides 1/2-20 threading in a 4.000-inch length, with a 12-point head and black oxide finish. Designed for fabrication and assembly tasks needing a longer chromoly fastener with a 12-point drive, it fits applications where specific thread engagement and a darker head finish are required for mechanical joins or visible hardware.
ARP 1/2-20 x 4.000 12pt black oxide bolts
