Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 189 0139 found under Elbow Flange To Tube by Rosenbauer International Ag. The National Stock Number assigned to this part is 4730015606990, 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 189 0139.