🔩 CNBTR 20 Series T Nuts: Premium Aluminum Slot Fastener Nut with M4 Thread - Pack of 50 Review

They work well if pre-cured thread lock is applied to the screw before it is screwed in. This will ensure the nuts rotate properly and engage the channel before tightening.

Fine, but it's my fault I didn't check the dimensions of these t-nuts. My Creality CR-10s have an overall height of 4.4mm, these are 4.72mm. Doesn't seem like much of a difference, but they are too thick to be rotated and locked into my machine's extrusion slots. Just a word to the wise! Other than that I have no complaints but now I have to grind a few of these!

Bought these for my Tevo tarantula on recommendation from one of the upgrade suggestion sites. They fit perfectly, almost like the ones that came with the kit. Some of the filament that came with my printer had the filaments warped and twisted diagonally, allowing me to swap them out and keep building instead of waiting for a replacement. Definitely saved the build and helped me attach some printed parts to update. Another advantage is the delivery within one day.

Twist and lock pretty well. I've seen other people (on 3D printer forums) complaining about their t-nuts being so painful and how much work they have to do to fix them, and I don't know if other t-nuts are any different are. or if I'm just something special. Rounded corners on two corners ensure they rotate perfectly almost every time. Every once in a while I'll get a pull for some reason and it will take a few tries before it rotates and locks properly, but I'm guessing it's about 5% or maybe…

There are some problems with these nuts. I have size M4. Out of 50, 5 or 6 were absolutely bad. The thread has been disabled. The bottles only go in a little and not through the nuts. Also, the corner on some of them is too salty and won't rotate in place to fix the railing system 2020. I had a hard time getting them to work as the nose didn't rotate easily to engage. I thought the profile was disabled compared to the others I have from the kit which work great. I was able to use 85% but it's…