A sample from the products for the Front Brake Caliper include: Boot,pin, Bolt,flange,6x10, Bolt,flange 8x49, Seal,piston.
twenty-one components are shown in this Xbr500s 1987 (h) Australia Front Brake Caliper exploded diagram.
In this schematic the "Pad Comp.,fr.(jb) (nas)" is used most often.