Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAF1783-0406D found under Elbow Tube by Nelson Aero Space Inc. The National Stock Number assigned to this part is 4730008122353, 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 NAF1783-0406D.