All Pro Series ARP2000 studs are centerless ground, heat treated prior to thread rolling and machining, and are rated at 220,000 PSI. These fasteners deliver a 25% increase in tensile strength over the OEM Torque to Yield (TTY) head bolts. Optimum design, enhanced reliability and increased strength are the main attributes of ARP Pro Series fastener kits.
(12) Head Studs
(12) Parallel Ground Washers
(12) 8740 Chrome-Moly Steel 12 Point Nuts
(1) 1/2oz ARP Ultra-Torque Fastener Assembly Lubricant
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