In this schematic the "Nut,flange,8mm" is used most often.
The Civic 2001 (1) 4dr Ex (ka,kl) Exhaust Manifold (vtec) consists of six pieces with the Mnfld Comp,exh being the most expensive.
Parts such as the Exhaust Manifold (vtec): Bolt,flange,8x12, Nut,flange,8mm, Mnfld Comp,exh, Bolt,flange,8x22 are included in the Civic 2001 (1) 4dr Ex (ka,kl) Exhaust Manifold (vtec) parts fiche.