Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99-6035391 found under Pipe Metallic by Nato Stock Number Assigned By An. The National Stock Number assigned to this part is 4710004690677, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 99-6035391.