In this schematic the "Nut,flange,6mm" is used most often.
A sample from the products for the Fuel Tank include: Mat,a Fuel Tank, Hose Comp,fuel Fe, Tape,side Cover P, O-ring,39.5x5.
This schematic depicts all components used in the Cb1300 Super Four 2008 (8) England / Mkh Fuel Tank partslist.