Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W903B24D found under Coupling Tube by Transdigm Inc. The National Stock Number assigned to this part is 4730013382965, 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 W903B24D.