Parts such as the Auto Radio: Bolt Flange 5x7, Tuner Assy,(auto), Bolt-wash,5x16, Brkt,radio (norma are included in the Civic 1998 (w) 2dr Ex Abs (ka) Auto Radio parts fiche.
The component with the lowest price in the AUTO RADIO schematic is the Bolt-wash,5x16.
On this parts fiche the Bolt Flange 5x7 is the most specified component.