With six applications this Screw M5x20 is the most specified part.
The twenty M620 2002 Eu (monster 620) 9151-1401a 004 Clutch component parts are all listed in this schematic.
A sample from the products for the 004 Clutch include: Nut, Disk, Clutch Pressure, Boss, Clutch, Piece, Clutch Push.