Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A3B121 found under Tube Bent Metallic by Oro Manufacturing Company. The National Stock Number assigned to this part is 4710012423227, 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 A3B121.