Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RA600-2 found under Valve Safety Relief by Honeywell Aerospace. The National Stock Number assigned to this part is 4820015590679, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RA600-2.