Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 450C04 ITEM5 found under Disk Valve by Garton Engineering Inc. The National Stock Number assigned to this part is 4820011163763, 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 450C04 ITEM5.