Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42-00-3165 found under Tube Metallic by Electric Boat Corporation. The National Stock Number assigned to this part is 4710010135744, 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 42-00-3165.