Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 240-3390612-801 found under Elbow Tube Air Duct by General Dynamics Corporation. The National Stock Number assigned to this part is 1560006274756, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 240-3390612-801.