Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-1-2X1 found under Tee Reducing by Ducommun Metals Co. The National Stock Number assigned to this part is 4730011095157, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2-1-2X1.