I was lucky enough to find a Marchesini RS250 front wheel in excellent condition. The brake rotor mounting bolts thread directly into the magnesium hub & all the threads seem to be intact which is a pleasant surprise.

Does anyone know the torque spec for these?

For the standard Al rim the torque spec is 20Nm, probably similar.

I torqued my disc bolts on my Dymags to 20Nm and they seem fine