Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IT-4401 found under Duct Assembly Bleed by Industrial Tube Company Llc. The National Stock Number assigned to this part is 1560014070409, 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 IT-4401.