With a quantity of three pieces, the Dowel,pin,12x20 is the most used part in the CYLINDER diagram.
Some items from this specific schematic: Bolt,flange,6x25, Gskt,cyln.stud (nas), Nut-wash.,8mm, Dowel,pin,12x20.
The Cylinder assembly is constructed from several parts from which the Cylinder Comp. is the most expensive.