The lowest price component in this Cam Chain (model T) parts-list fiche is the Gasket(5.8x13x1.2) (nas).
With four applications this Bolt is the most specified part.
Some items from this specific schematic: Gasket,tensioner Adjuster (nas), Adjuster Assy,tensioner, Cushion,cam Chain Tensioner, Guide,cam Chain No.1.