Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TUBE0031813 found under Tube Condenser by Ketema Inc. The National Stock Number assigned to this part is 4710015617317, 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 TUBE0031813.