When I replaced my shock absorbers a couple of years ago, I remember looking into the Chinese bolts and the OEM Rover ones, I think I ended up fitting the standard OEM bolt, but what I did do was to put a nut on the protruding thread of the bolt after it was tightened up. This locked nutted the bolt to the suspension arm and mainly it was to help keep the thread of the bolt protected so if I wanted to remove the bolt in the future, the thread should be nice and clean and healthy once I took the nut off again.
Sundance