Aeroflow Big Block Chev Harmonic Balancer Bolt 12 Point Head, 1/2-20" Thread (AF37-1407)

The Aeroflow harmonic balancer bolt is designed to suit Big Block Chev. Manufactured from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within the stud. Meaning these are rated up to 190,000 psi making them stronger than Grade 8 and OEM fasteners. They feature a high hex head to prevent socket slippage while rotating the engine during assembly or routine service inspections. An extra thick ground washer is provided to allow for a more accurate, uniform torque.