V1x 7z 004 -

(e.g., "V1X" might relate to a specific aircraft model, chemical compound, or project name.)

: It could be a specific internal filing code for a government or corporate document (similar to those found in DTIC technical reports or NRC submittals ). V1X 7z 004

It appears that does not correspond to a recognized academic subject, historical event, or standard technical specification. In various contexts, similar alphanumeric strings can refer to very specific items such as: V1X 7z 004