Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 604 503 5575 02 found under Packing With Retain by Messier Dowty. The National Stock Number assigned to this part is 5330218529553, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 604 503 5575 02.