40 Series T Nut, M4 Heatset Insert

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3594897.

I had some clearance issues with the original version of this nut and couldn't get it to turn a full 90 degrees once inserted into the slot. To be fair, it's more than likely an issue with the 40mm extrusion I've recycled off of the biggest POS printer I've ever had the misfortune to work on, a Leapfrog Creatr HS.

In the process of tweaking the shape of the part I thought I'd give it a go with some heatset inserts, and this was the result. Inserts are an M4x6mm, and I happened to use some mold-in style inserts because that's what I had on hand. YMMV with legit heatsets.