upper balljoint with no threaded stud???

i ordered a set of upper balljoints from the local auto parts place and they gave me TRW p/n 104233. i didnt open the box until i got home, but it looks very different from the OEM balljoints that were riveted into the stock a-arms. for one thing, there ISN'T a threaded stud/castellated nut to fit into the spindle; instead there is a fat cylindrical piece of metal. aside from the three nuts and bolts that obviously attach it to the a-arm, there is a long bolt and nut that came in the box.

Is this the wrong part or is there some special way of mounting this one? Im really perplexed.

Mike.

my guess is that the new one is supposed to be of a pressed variety. i would take it back and ask for one that is a thread and nut deal.

I just did the upper ball jonts andd from what your describing , there is definitely something wrong those parts.