Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BM11399-41 found under Union Pipe by Demarkus Corp Refrigeration Engi. The National Stock Number assigned to this part is 4730002870166, 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 BM11399-41.