after 3-5 years most settlements have established their basic survival needs, from there you just need to expand their industrial capacity. so seeds for textiles, lubricants and other plants that come in handy when bootstrapping industry would be important. if your assuming you just need to repair existing systems, you can fit a milling machine, lathe, some 3D printers(multi material multi head) and some essential components for repairing circuit boards in a commo shelter.
if you assume you'll have to bootstrap industry from scratch, then you resort to something like the Global Village creation kit that i mentioned a
long time ago.
of course as mentioned in that thread you would need a lot of CBRN equipment in the caches as well.