Drafting standards

I have been tasked with creating a company drafting standards, i am basicly starting from scratch, however i am to use ISO as a back boneto base the standards. I have ran into a few issues. Aside from buying every ISO standard and reading them. I was hoping that somebody would be kinda enough to share there company standards? I know that a few Major compaines like GE and GM require that any vendor print be to there standards. I just want to see a complete referance.