PCB mount for Copperhill SAE J1939 ECU Simulator Board (or any PCB with 3mm mounting holes 42mm x 45mm on center. (See images for dimensions)
https://copperhilltech.com/sae-j1939-ecu-simulator-board-with-usb-port/

Mounting holes are slightly under-sized (2.5mm) to allow board to be attached without backing 5.5mm hex nuts (although hex nuts should really be used since holes are not threaded and PCB will eventually loosen.)

Posts on mount are tall enough to allow wires to be run between PCB and mount (~4.7mm)

Inner mounting holes (30mm OC) allow for this mount to be DIN Rail mounted using my DIN Rail clip mount remix found here: https://www.thingiverse.com/thing:3882685