Various bits and bobs I made in Onshape for making Meshtastic nodes. Added 3.4mm holes on a 5mm grid to allow for printing and screwing these in to 5x5mm baseplates found in many cheap electronics enclosure boxes. 

Actual screw size for mounting into the printed parts varies based on the hole size on the actual part. Ranges from m3 for some to m2.6 for others. If the screw fits through the hole on the PCB it will work with these parts. 

EG: Heltec T114 without screen has two holes that fit M2.6 screws but are too small for M3. 

You can also design a simple baseplate in CAD and drag these mounting brackets into it in the slicer. 

I've also included an Onshape link so you can play around with arranging them in CAD and make your own custom baseplates. Pictured are examples of some of the baseplates I've made just by combining these simple brackets in Onshape. 

https://cad.onshape.com/documents/c0c42d121f310cb740f13dea/w/76ec56333d9225d1b801e90f/e/e1e2db155602a41bcef6ffb8?renderMode=0&uiState=67cdeb11f1a3b56022b44732

They will print flat or vertical so you can really cram the components in if you have to. 

Happy Meshing!