In this schematic the "Nut, Spring" is used most often.
A sample from the products for the Side Cover include: Cover,side 2 Dark Red M.h, Screw, Tapping, Graphic, 1, Cover,side 2 Light Gray M.
This Side Cover diagram displays the required parts for the Xn150 Teo's 2002 5pr3 Italy 1a5pr-300s1 Side Cover.