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The ARP chromoly bolt is a 7/16-20 x 4.250-inch 12-point black oxide fastener intended for fabrication and mechanical assemblies. Chromoly construction paired with a 12-point head works with common 12-point sockets for secure tightening. The black oxide finish provides a consistent dark appearance and modest protection against surface corrosion in exposed applications.
ARP 7/16-20 x 4.250 12pt black oxide bolts
