I designed this to fix my TV stand. I bought it second hand so I don't know the brand but this piece looks like any other I've come accross. The diameter is 14.65mm and the depth is 11mm. I used calipers to measure the existing one I had and it's not a perfect replica, but it's fairly close. I was able to tighten it with no problem. I sliced it in Cura on .1mm layer height on engineering settings. I used a support blocker to so that just the bottom was supported, but nothing else. I found that without any support it rocked back and forth while printing and messed up. I've had trouble with supports this small though so I didn't want to add too much. I attached a photo showing the support blocker.