In this schematic the "Bolt" is used most often.
A sample from the products for the Cam Chain include: Gasket,tensioner Adjuster (nas), Gasket,tensioner Adjuster (nas), Gasket,tensioner Adjuster (nas), Tensioner,cam Chain.
The most reasonably priced component used on the Dr-z400s 2012 (l2) Usa (e03) Drz400s Dr Z400s Cam Chain is the Screw(6x12).