The most reasonably priced component used on the Cn250 Fusion 2005 (5) Japan Mf02-220 F-1 is the Screw,tap.,4x12.
The F-1 assembly is constructed from several parts from which the Light Assy,head is the most expensive.
Parts such as the F-1: Screw,tap.,4x12, Holder, Cover Comp., Bolt,flange,6x20 are included in the Cn250 Fusion 2005 (5) Japan Mf02-220 F-1 parts fiche.