Discussion
Make life easier for yourself, do NOT fit the star socket type bolt. Those are really intended for one off machine fitting when new and will strip socket if not an absolutely perfect fit. Fit 12.9 (MUST be 12.9, no less) high tensile hex socket head from a good name like Unbrako and get an impact bit to match. These need to be REALLY tight, as I know only too well! Threads on bolt and coupling need to be clean (not accidentally well lubricated in CV joint grease!) and a suitable threadlock compound used. Then, like Kitchski, I paint across the joint and check them.
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