Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GD515AF6 found under Hose Air Duct by U S M Corp. The National Stock Number assigned to this part is 4720011631106, 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 GD515AF6.