Hi, Unplated socket head cap screws grade 12.9 M10x1.50x50 will do the job. Not recommended to re-use once removed. They usually come oiled so degrease them before fitting and torque them to 70Nm (Rave mentions 46Nm in the propshaft fitting procedure - which is incorrect). A drop of loctite 271 wouldn't go amiss. Check the link washers are not distorted / damaged - if so replace them.
Regards, Fishy