The Screw,tapping4x12 is the cheapest item from this partsfiche.
The Bulb Winker is the most widely applied product in the CHF50S SCOOPY 2007 (7) JAPAN AF55-160 F-20 ( four times ).
A sample from the products for the F-20 include: Lens Comp.,l Wink, Screw 4x16, Winker Assy.l Rr, Bulb Winker.