This schematic depicts all components used in the Tz125 2000 4jt7 Italy 104jt-100e1 Rear Arm partslist.
A sample from the products for the Rear Arm include: Bolt, Small Flange, Collar(4dp), Bearing, Cylindrical (23x), Clamp(1vj).
In this schematic the "Collar(4dp)" is used most often.