76 ft/lb ?
Dumped my scrapper now or you could have had one, at £3.00 better buying new perhaps.
Yes disc off, insert new one in from rear of hub,thread the wheel nut on and tighten to recommended torque to locate in the splines then remove nut,stud should remain in place then reassemble.
You weren't using one of those expensive Snap-Off torque wrenches was you :)
Metal fatigue, at least it wasn't a Boeing 737 maingear brace securing bolt!