Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FFA N1554 found under Valve Globe by Desco Corp. The National Stock Number assigned to this part is 4820011963324, 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 FFA N1554.