All Pro Series ARP2000 studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rated at 220,000 psi. These fasteners deliver a 35% increase in tensile strength over the OEM torque-to-yield (TTY) head bolts.
(10) ARP2000 head studs
(10) parallel ground washers
(10) 8740 chromoly steel 12pt nuts
(1) .5 oz. pack of ARP Ultra-Torque fastener assembly lubricant
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