Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B31W2 0X1 5 found under Reducer Tube by Tri Canada Industries Ltd. The National Stock Number assigned to this part is 4730013487929, 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 B31W2 0X1 5.