Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 98-90319-016 found under Tee Tube To Boss by Bae Systems Technology Solutions And Services Inc Dba Bae Systems Information And. The National Stock Number assigned to this part is 4730010561340, 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 98-90319-016.