The lowest price component in this Intake parts-list fiche is the Screw, Pan Head (j10).
In this schematic the "Screw Pan Head" is used most often.
Parts such as the Intake: Screw, Panhead (1j7), Washer, Plate (898 C/case), Washer, Spring, Gasket, Valve Seat (nas) are included in the Pw80 1994 4bc4 Germany 244bc-332g1 Intake parts fiche.