Files with b5s extension can be found as Numerical Controlled Machine data. Most likely obsolete file format.
B5S file extension - Numerical Controlled Machine data
What is b5s file? How to open b5s files?
File type specification:
The b5s file extension was in the past used for Numerical Controlled Machine file format.
Probably old and obsolete format without support from developer. No further information could be found.
This b5s file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.