What is this piece on the z-rod called?

The screws are loose and I cannot seem to tighten them up on one side. I think they are stripped.

Is there a replacement piece or an upgrade available?

Thank you!

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Those screws are not supposed to be tight, they allow for any variation/play in the leadscrews. You tighten them and then back them off by about 1/2-1 turn. Not sure that I have seen a replacement or upgrade for that part.

Appreciate the feedback. The issue was that apparently being new to the device I had misjudged how much to tighten it prior to “backing off” and had stripped it.

I ended up putting a washer and bolt there to get a proper perspective on how tight it was, and all is good now :slight_smile: