Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FM-124 found under Micro Flow Control by Wa Kates Company The. The National Stock Number assigned to this part is 4820015480619, 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 FM-124.