Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5903-00004 found under Strainer Element Sediment by Bae Systems Operations Limited Dba Bae Systems Plc. The National Stock Number assigned to this part is 4730013793055, 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 5903-00004.