adjustable drag link, bolt end spins on itself

[mark '87 930]

I am trying to install one of those adjustable drag links as i have just finished installing a dropped axle... The drag link itself is fine, but as i try to put the nut on the end of it, the threaded part of the end spins on itself as i try to tighten the nut.

This particular one does not have the cotter pin hole in it and it seems to be a lock nut.

Any thoughts, do i have to go with an air impact to get it on? if that would even work..