In this schematic the "Screw,pan,5x25" is used most often.
The Screw,cross,5x18 is the lowest priced item on this E-8-2 Oil Pump (xr350rf.rg) schematic.
A sample from the products for the E-8-2 Oil Pump (xr350rf.rg) include: Spg,oil Leak Stop, Dowel,pin,10x12, Bolt,flange 6x55, Dowel,pin,8x10.