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

Aeroflow Small Block Chevy Harmonic Balancer Bolt

Designed specifically for Small Block Chevy V8 engines, this bolt delivers reliable, torque-consistent mounting for your harmonic balancer. Crafted from Grade 8 steel and heat-treated for enhanced strength, it stands up to the demands of engine rotation and service intervals.

• Thread size: 7/16-20"
• Under Head Length: 2.250" (57 mm)
• Washer: extra thick, parallel-ground washer included;.310" (7.8 mm) thick x 1.750" (44 mm) diameter
• Spanner size: 5/8"
• Torque setting: 60 ft-lbs (81 Nm)
• Head design: high hex head to minimize socket slippage during assembly or service checks

The bolt features a durable zinc dichromate gold-tone finish and includes a split lock washer to resist loosening caused by engine vibration. An extra-thick, parallel-ground washer ensures more accurate and uniform torque, helping maintain secure balancer fastening throughout your engine’s life.