Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BACN10DU4 found under Locknut Tube Fittin by B And E Manufacturing Co Inc. The National Stock Number assigned to this part is 4730015203268, 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 BACN10DU4.