Yes, I have the engine hub with the knurled face against the spinner back plate, followed by the prop, and finally the washer with the nut fitting into it's center. The propeller that is have an an APC 10x6 and imprinted on the packaging is that it's for 50-60 2 cycle engines. It does have a narrower hub than the master airscrew 3 blade prop. that I also have on hand.