In this schematic the "Bolt,socket" is used most often.
A sample from the products for the Water Pump include: Gasket 256113960000 (nas), Circlip(10w), Impeller Shaft Assy, Housing, Water Pump.
twenty-two components are shown in this Vp250 2007 5b21 Poland 1f5b2-300s1 Water Pump exploded diagram.