Small Block Chevy Harmonic Balancer Bolt Small Hex Head, 5/8" Spanner Size

The Aeroflow harmonic balancer bolt is designed to suit Small Block Chevy engines. Made from a Grade 8 steel they are heat-treated for superior strength. They feature a high hex head to prevent socket slippage while rotating the engine during assembly or routine service inspections. An extra thick, parallel ground washer is provided to allow for a more accurate, uniform torque. Witha durable zinc dichromate, gold tone finish, complete with split lock washer to prevent loosening caused by vibration.