Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 65503-00112-120 found under Tube Metallic by Rotair Industries Inc. The National Stock Number assigned to this part is 4710012484362, 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 65503-00112-120.