$10 Upper Ball Joint Socket - Really

YY1 said
Your sure about self tapping RRR?

The ones I've done recently had very shallow, rounded crest threads, not sharp AT ALL.

Don't see any way they could possibly self tap.

Also, all the ones I've done are super easy to cross thread because of that odd, shallow thread design.

If it doesn't go in at least a full turn and then some by hand, start over.
Click to expand...

They are self tapping. The ball joints are hardened. It's more like thread forming There are no chips produced. The UCA will strech a little bit and those little threads will form into the UCA. Its a good way to do it cause now its a press fit on the threads. Even a little cross-threaded is ok cause its still all new threads. just my .02 worth Jim