The Nut,flange,6mm is the lowest priced item on this Front Door Window schematic.
Parts such as the Front Door Window: Bolt - Wash, 6x16, Sash R,fr Dr Ctr, Glass Assy R,fr D, Reg Assy R Fr Dr are included in the Civic 1999 (x) 4dr Ex (ka) Front Door Window parts fiche.
This Reg Assy R Fr Dr is the most expensive of the items that make up this Front Door Window assembly.