One of the improvements made to later Raspberry Pi designs was was the addition of mounting holes. These give users some extra options when it comes to mounting the Pi. Depending on the design the Pi will have either two or four holes. Care is still required to avoid putting the PCB under unnecessary stress but some holes is better than none.
I’ve created a printable template that can be printed onto paper and used to drill holes in cases or other materials for attaching a Pi to. It also includes the Pi camera module which has four mounting holes.
Here is the PDF template which can be printed out and used in your projects :
Your printer options may attempt to scale or “fit” the design to the paper and this can cause the shapes to be the wrong size. To ensure the items on the paper are the correct size the PDF includes a “calibration square”. When printed it should measure 30x30mm.
The Raspberry Pi holes accept 2.5mm (M2.5) screws or bolts. My local DIY store didn’t sell bolts this small so I ordered some off the internet. I went for plastic bolts as these are light and easy to cut shorter if required.
For the camera module I ordered 2mm bolts.
Direct Template Link : Raspberry Pi Mounting Hole Template