Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 953B603-1 found under Tube Conveying by Sundstrand International Corporation. The National Stock Number assigned to this part is 4710012407757, 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 953B603-1.