I hope @d0p3t and the other mod’s will let it slide for once that i’m restructuring an old post 
Especially since this is the first result you’ll get when searching “Model name from hash FiveM” on Google
(which what I was searching when I needed info on it, and so did two mates of mine whom where also
searching for that same possibility haha).
Therefor this 'one-time-resurrecting-post reply by me:
There is a ‘solution’ now I’ve made a list and function which gives you the model name to over 53.000
hashes 
Posting this here on this ‘old thread’ just to help others whom are in need of this information and also hope it’s received/seen this way (helping the community)