Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N5003 found under Ball Valve Ported by P J Valves Inc. The National Stock Number assigned to this part is 4810008780749, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N5003.