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ARP 1/2-13 x 4.250 chromoly 12-point bolt in black oxide finish offers extended length for assemblies needing a 4.250-inch fastener with 1/2-13 thread. The 12-point head accepts compatible sockets for installation, and the chromoly construction with black oxide finish supplies the specified head profile and surface. Intended for fabrication and repair tasks that call for this exact sizing.
ARP 1/2-13 x 4.250 12pt black oxide bolts
