The lowest price component in this Heater Unit parts-list fiche is the Screw Tapping 5x12.
A sample from the products for the Heater Unit include: Nut,flange,8mm, Heater Unit Assy, Screw Wash 4x16, Core Comp Heater.
This Heater Unit diagram displays the required parts for the Civic 1996 (t) 4dr Lx (ka,kl) Heater Unit.