Parts such as the Head Light (u,d): Bolt,hex.,10x32, Spg-washer 10mm, Spg-washer 5mm, Washer,4mm are included in the Cb350b4 Italy Head Light (u,d) parts fiche.
With two applications this Bolt,hex.,10x32 is the most specified part.
The six Cb350b4 Italy Head Light (u,d) component parts are all listed in this schematic.