Prop Washer?

I just picked up my newly refinished prop in an attempt to get it online for the weekend. My mechanic removed it, dropped it off at the machine shop, and I can only find the key, nut and carder pin. Shouldn't there be a rear facing washer? If so, anyone know what size?

Thanks for your help, gentlemen!

I think that's it I do not recall any washer. The prop tightens up on the tapered shaft.

No washers on the prop.

Thanks guys!