Review on 🔩 50 Count European Standard T-Nuts, M4 T-Slot Nut Hammer Head Fastener, Nickel Plated Carbon Steel for Aluminum Profile – 20 Series by David Guliford

mismatch. For comparison, I have a 3D print with holes for an M4 bolt, and the holes in the M4 nuts I got are wider and fit loose. I took one of these nuts to my local hardware store and found that they fit an M5 bolt perfectly. I didn't return them because I had to set up some 3D printed props and couldn't start the return process and wait for new ones or a refund. I am not sure if they sent me the wrong size or if they are the wrong size. Otherwise the quality seems good and once installed with the right size screws they do the job of holding the supports in place. I had to modify by enlarging the holes on my printed supports to fit the new M5 bolt.