Small Block Chevy
Small Hex Head, 5/8" Spanner Size
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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. With a durable zinc dichromate, gold tone finish, complete with split lock washer to prevent loosening caused by vibration.