Most of the hardware is M6 (key 9 ...) with various geometries that are not found today. The best is to reuse it by making it absolutely before treating with anti-corrosion treatments such as electrozingage for example. In case of non-compliance with this operation, the bolts will rust shortly on a machine freshly redone and everything will be restarted.
The frame spacers as well as the crank axle support and the motor return springs must also be disassembled to be treated with the hardware. This small disassembly in addition brings a certain effect on the final result.
Small precision, the only screws that must be painted are the four that fix the two arms of the fork.