parts catalogue and model numbers

[MC680x0]

so the parts catalog in the downloads section, refers to FZS600/(295DM-300E2)

a quick check on wikipedia (not sure how accurate this is) suggests models

• 1998: 5DM1.
  
• 1999: 5DM4.
  
• 2000: 5DM7.
  
• 2001: 5DMC for FZS600 and 5DMF for FZS600S.
  
• 2002: 5RT1
  

so where does the "295DM-300E2" come from and how do the above model numbers relate - if at all - to the parts catalog?

ta