It might be worthwhile emailing Indesign automatisering - automatiseret prepress og DTP and check if they are willing to update the Auto Hyperlink script they wrote for InDesign many years ago. It would do exactly what you are after. All you need is a tab delimited list of the part numbers and hyperlinks. (I've never used the script in the past, but I'm thinking it would be cool if a feature were added that allows us to locate the part numbers in the text based on character or paragraph style formatting for example.

I'll move this forum post to the scripting forum. Hopefully there'll be additional support for you there.