Your overhaul will be easier to execute and with a more professional outcome when you specify new parts like this M6 Flange Bolt
rather than making do with the old corroded, maybe slightly damaged item.
For other new parts to make your task easier and with better results check out our online schematic for your model.
You may wish to view these other M6 Flange
Bolts with the same model code:
Any machine is only as good as the quality and precision of its fasteners. Use new, correct specification fasteners why take the chance reusing the old items.