Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 198736050 found under Cock Drain by Northern Lights Inc. The National Stock Number assigned to this part is 4820015410757, 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 198736050.