Parts such as the Front Brake Caliper: Front Caliper Assy Rh., Screw(4dh), Goupille De Plaquette, Pad, Caliper 2 are included in the Vp300 2004 1s61 France 1c1s6-300s3 Front Brake Caliper parts fiche.
The most reasonably priced component used on the Vp300 2004 1s61 France 1c1s6-300s3 Front Brake Caliper is the Bolt, Washer Based.
On this parts fiche the Screw(4dh) is the most specified component.