Parts such as the Air Cleaner (nps505/6): Bolt-washer,6x32, Case Sub Assy,air, Nut,clip 6mm, Screw,tap.4x16 are included in the Nps50 Zoomer 2006 (6) England Mkh Air Cleaner (nps505/6) parts fiche.
The Screw,tap.4x16 is the cheapest item from this partsfiche.
The Nps50 Zoomer 2006 (6) England Mkh Air Cleaner (nps505/6) consists of seventeen pieces with the Cover Sub Assy,ai being the most expensive.