I wonder if anyone can tell me the thread size on a MVVS 58 IRS this is the prop shaft its a pro model, think its a titanium shaft

Thanks John

The central shaft is M10x1 metric fine thread. This nut is not really needed, and if present should be torqued only lightly, as too much torque can drive the prop drive up the taper on the crankshaft and destroy the design axial play and/or break the M8 thread at the end.
The prop holding bolts are 6x  M4. A 3Nm torque is more than enough for any prop.

Thank you very much Pe reivers appreciate you quick reply .

Regards John