Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BACH50A50 6 found under Nipple Boss by The Boeing Company. The National Stock Number assigned to this part is 4730001870486, 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 BACH50A50 6.