The most reasonably priced component used on the Sfx50 1999 (x) Germany Windshield is the Bolt,flange,8x35.
Parts such as the Windshield: Washer,plain,6mm, Nut,hex.,8mm, Windshield, Nut,hex.,8mm are included in the Sfx50 1999 (x) Germany Windshield parts fiche.
In this schematic the "Washer,plain,6mm" is used most often.