A sample from the products for the Turn Signals ('74-'75) include: Gasket,signal Lamp (nas), Bolt-upset, Screw-pan Head,3x5, Screw-pan Head,4x20.
With eight applications this Screw-pan Head,4x20 is the most specified part.
The lowest price component in this Turn Signals ('74-'75) parts-list fiche is the Washer-spring,6mm.