The two Hym 2013 Usa (hypermotard Sp Usa) D180-00013 028 - Sospensione Posteriore component parts are all listed in this schematic.
In this schematic the "Screw, Special" is used most often.
The 028 - Sospensione Posteriore is made up of components including this Rear Shock Absorber which is the most expensive.