Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 417-517-9 found under Blade Set Steam Turbine by Todd Pacific Shipyards Corp. The National Stock Number assigned to this part is 2825002673956, and the Federal Supply Class is 2825 Steam Turbines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 417-517-9.