Dishwasher water pump prop

This is an engineered water pump prop to replace a broken one in our Pramco dishwasher. The design has two 2.5mm lock nut and 2.5mm screw to lock the prop to the axle.

2 stl files, the second has support rings for printing on a reprap printer. those shall be removed after printing.

I suggest to use stainless nut and bolt, since I have put on regular and after 7 months is rusted and gave up.... see last pic....