The twenty Rm250z 2005 (k5) Usa (e03) Front Master Cylinder (model K1/k2/k3) component parts are all listed in this schematic.
In this schematic the "Washer(10x15x1.5)" is used most often.
Of all the components that make up this Front Master Cylinder (model K1/k2/k3) the Screw has the lowest price.