5.25" to 3.5" brackets with captive nuts

I found the two case mounting screw holes were 7mm too high so I recreated it from scratch using the original as a template and added captive M3 nuts to ease assembly and prevent metal parts coming loose inside the computer.

I also have 3.5" to 2x and 3x 2.5" brackets in a similar design.

The nuts can be pushed in with a pair of pliers and pushed out with a fine pair of tweezers using the bolt holes. The 3.5" drive standoffs requre M3x25 countersunk screws.

I printed using Cura 4.9 with eSun PLA on an Ender 3 with 0.4mm nozzle, 0.3mm line width, 0.16 layer height, 100% infill, 210C nozzle, 50C glass buildplate, 10mm brim, 40mm/s top/bottom/walls, 40% fan speed at 5mm, with 6mm retraction at 45mm/s, no support.