Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D8929-40-153-264 found under Reducer Pipe by Boyertown Trolley Corp. The National Stock Number assigned to this part is 4730006406330, 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 D8929-40-153-264.