This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
This class includes nuclear weapons which consist of depth charge bodies assembled with nuclear warheads. It includes training weapons and all specially designed components which are not classifiable elsewhere.
Possible NAICS Codes
813910 – Business Associations
561920 – Convention and Trade Show Organizers
322121 – Paper (except Newsprint) Mills