Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9439-071-17001 found under Hose Metallic by Chart Sequal Technologies Inc. The National Stock Number assigned to this part is 4720012885795, 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 9439-071-17001.