The easiest way how to get a single big ZIP file from a split multi volume archive is to first decompress all the parts and then simply make a new archive. You will need all the pieces (*.001, *.002., *.003 etc.) to successfully decompress all the data.
Convert Compressed file from a multi-volume archive (part 1) to WinZIP Compressed ZIP archive.
We found 8 software records in the database related to .001 to .zip file format conversion.
Microsoft Windows software - convert 001 to zip on Windows
One of the oldest and most popular shareware file archiver and data compression utility
Convert from 001 file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned 001 to zip. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Popular open source file archiver with a high compression ratio
A free open source archive utility
An archive opener for Microsoft Windows and Mac OS X
Apple macOS / Mac OS X software - convert 001 to zip on OS X
Mac version of a free file archiver
Mac version of the popular utility
A backup and archive utility
Linux/Unix software - convert 001 to zip on Linux
A Linux application used as frontend for popular compression tools