Threaded nut for 12V Car power adapter

I purchased a 12V cigarette power recepticle for my DIY Exercise bike, but managed to loose the nut to hold it in place.. so.. to Fusion 360 we go.

The threads is isometric with a pitch of 1.5mm, but Fusion only had threads for M28 and M30 and this thing is somewhere inbetween.. I tweaked the standard library a bit and managed to come up with a thing that actually worked. It's a bit tight, so maybe expand by a few % in X and Y directions before printing.. otherwise, PLA is cheap and you can do it again :)