Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 512012 found under Cock Drain by U S Dynamics Corporation. The National Stock Number assigned to this part is 4820013218114, 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 512012.