Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A-A-59440 found under Cock Drain by Federal Commercial Item Description. The National Stock Number assigned to this part is 4820013632116, 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 A-A-59440.