I ordered 8 fittings from EK and all of them have damaged threads. I emailed EK customer service and received the following message:
Thank you for contacting us.
We are sorry for the problem you described.
Actually this is ok, it does not affect screwing. But I can send you the black ones, and I will select the less ''damaged''.
EK sent me 8 more under an RMA and all 8 still have damaged threads.
-Kind of pissed they are passing along supplier quality issues to end customers. Clearly, the old Yugo factories need to update their tooling.
-I don't feel confident in the performance of the threads when there are only 2-3 threads holding the fitting to the block/pump/rad
-At this point my only option is to send the old ones back under the RMA, but they did not include a return shipping label, so I have to pay to ship from California to Slovenia.