Parts such as the Battery: Rubber B,bat Box, Rubber A,bat Box, Bolt,flange,6x25, Bolt,slotted,6x12 are included in the Cb750k 750 Four K 1979 (z) Usa Battery parts fiche.
In this schematic the "Collar,6.3x13" is used most often.
The lowest price component in this Battery parts-list fiche is the Bolt,slotted 6x12.