Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 397-11 found under Tube Assembly Expander by Carlisle Industrial Brake. The National Stock Number assigned to this part is 4710001289757, 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 397-11.