Passenger side was fine, then came the drivers side........

The spindle threaded section sheared clean off, it was easy turning as soon as I started so probably would have failed at some point when I was using the wipers (?).
Is it available as a separate part from anywhere? I see PET lists the whole RHD crank drive, 901.628.022.00, and there are several of the LHD available on eBay which I presume I could dismantle for the part (?), but that seems overkill for my needs. Perhaps a repair is possible?
Thanks in advance

