Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N1552FFA found under Valve Angle by Desco Corp. The National Stock Number assigned to this part is 4820010230794, 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 N1552FFA.