Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 340 0090502 25 found under Hose Air Duct by General Dynamics Corporation. The National Stock Number assigned to this part is 4720005952679, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 340 0090502 25.