Parts such as the At Differential Gear: Circlip, Ex 90mm, Bolt Hex 10mm, Ring, Set 80mm 3, Gear, Final Driven are included in the Civic 2003 (3) 4dr Dx A/c (ka) At Differential Gear parts fiche.
In this schematic the "Bolt Hex 10mm" is used most often.
The At Differential Gear assembly is constructed from several parts from which the Diff Comp is the most expensive.