Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 470057 found under Tube Transfer by Simon Paul Boiler And Welding Co. The National Stock Number assigned to this part is 4710009609423, 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 470057.