Parts such as the 018 Battery Box Mount: Screw Tbei M6x25, Nut, Screw Tceif M6x18, Battery are included in the Sbk999 2004 Usa (superbike 999) 9151-1642b 018 Battery Box Mount parts fiche.
The 018 Battery Box Mount is made up of components including this Electr.control Unit 999/04 Usa which is the most expensive.
With four applications this Nut 6mm is the most specified part.