The most reasonably priced component used on the Xl600v Transalp 1993 (p) Germany / 27p Fr. Brake Master Cylinder (xl600vm/vn/vp) is the Screw,flat,4x12.
On this parts fiche the Washer, Oil Bolt is the most specified component.
Of all the components used in this assembly the Sub Assy,fr M/c is the most expensive.