When ordering a fixed pitch aircraft propeller, it is important to know the difference between a tapered crank shaft and a flanged crank shaft. Be sure to alert your sales person as to which you have. The bolt kit for each is different and not interchangeable. A tapered shaft may require bushings in the back of the propeller. A tapered crank shaft is pictured top right and a flanged crank shaft is pictured bottom right.
Tapered Crank Shaft or Flanged Crank Shaft?