Correction
Avgas,
I have made an error that I have discovered upon closer examination of the document. If the aircraft has the cessna approved corrosion control and prevention program in place then the life of the bolts returns to flight hours only and the 3 years no longer applies. The corrosion and control program is thorough and involved though. I thought that cessna simply placing a three year calendar life on a bolt was unbelievable. However at over $1000 simply for the parts this is still gouging.