The Screw,tapping,3x1 is the cheapest item from this partsfiche.
In this schematic the "Screw Tapping Hex" is used most often.
Parts such as the Meter (cb1300/a): Bolt,flange,6x16, Clamp, Grommet, Rubber Meter Set are included in the Cb1300 Super Four 2007 (7) Australia Meter (cb1300/a) parts fiche.