Prop question about a 55 fisherman

[oneeyemike77]

1958 evinrude 5.5 fisherman #5

1958 evinrude 5.5 fisherman #5516
Does anyone know the part # or availability of the rubber cap that goes over the end of the prop? The shear pin is not brass like I fiqured it would. Are these supposed to be brass or stainless?
thanks

 

[optsyeagle]

#303365 was the original numbe

#303365 was the original number for the propeller shaft cap.