This set of pages contains information on the US Department of Defense's standard 498 for the management of software development.
You can view the standard in HTML form.
You can download these HTML pages (301906 bytes).
You can download a nice set of PDF files; I've provided .tar.gz form (1310709 bytes), which WinZip will cope with if you aren't on a UNIX system. The README for this is slightly inaccurate; most times on UNIX systems with GNU tar, you can just say
tar zxvf 498-unix.tar.gz
The position is that the DoD no longer want to fund standards such as 498 (it was always a bit of a stopgap). They now use IEEE 12207.
None the less, there are still people (eg, prime contractors for UK MoD projects) who stick with 498, for various reasons: