Here is the part. As always before ordering boards you need to check the footprint against an actual part to make sure it is correct. A few points, it appears to be a stereo jack not mono. The part is somewhat odd in that I made the mounting holes through hole with pads (with the suggested 1.2mm hole) so you can solder down the legs to make the part more stable. I’m not entirely sure that the drawing is for a pcb footprint as opposed to a description of the physical part. I assumed footprint and if that is not correct a 1.2mm hole may be too small. I also used the right and left pins from a Sparkfun part so they may not be in the correct order (the drawing only has pin numbers.) In any case try it and see if it works.
3.5mm Audio Jack-wq-pj320b.fzpz (7.7 KB)
edit2: I finally remembered I promised to fix this. I just replaced the part with a standard SMD part that appears to work. The holes are just holes with no pads (because I can’t make pads work).
edit: then again, this part as it stands has problems when moved to the bottom of the board. The presence of both copper layers appears to break the move to the bottom of the board code. This part is OK for checking the footprint works, but otherwise shouldn’t be used til it is fixed.
Peter