Review on 12PCS PZRT M8 T-Nut Sliding Nut for 3030 Series Aluminum Extrusion Profile with 8mm Slot Groove by Bret Wong

These nuts only got a nice star because I was able to twist them to fit so they could be used later the distance I had to make, they really weren't the same product anymore. A slight deviation would almost be forgivable, but these nuts were about 3mm wider and about 2mm taller to fit a standard 4040 extrusion channel. The actual geometric profile of the nut is also wrong; Even if the mother was the right size, it still wouldn't fit. On the 4040, these nuts are equivalent to trying to put a square pin in a round hole. These things are just rubbish. I'll tell you what: They're incredibly expensive, so that's great.