Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4073431-01 found under Tube Assembly Metal Branched by United Technologies Corporation. The National Stock Number assigned to this part is 4710012945138, 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 4073431-01.