Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11590DL40522-1 found under Nut Hose Coupling by Gulfstream Aerospace Corp. The National Stock Number assigned to this part is 4730013315123, 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 11590DL40522-1.