Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 404816 found under Elbow Flange To Tube by National Aerospace. The National Stock Number assigned to this part is 4730008045629, 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 404816.