Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 250AI found under Coupling Assembly by Emerson Power Transmission Corpo. The National Stock Number assigned to this part is 4730010594456, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 250AI.