Parts such as the Front Winker: Bulb,winker Light, Socket Comp,r Fr, Socket Comp,l Fr, Screw,tapping,4x12 are included in the Nhx110wha Lead 2010 (a) England / Mkh Front Winker parts fiche.
In this schematic the "Screw,tapping,4x12" is used most often.
Of all the components used in this assembly the Winker Comp,r Fr is the most expensive.