Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5401-043 found under Adapter Straight Flange To Hose by Cemen Tech Inc. The National Stock Number assigned to this part is 4730015516626, 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 5401-043.