Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J5-439 found under Nozzle Spray Fluid Emulsion by Alkota Cleaning Systems Inc. The National Stock Number assigned to this part is 4730011310278, 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 J5-439.