Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 489-1-2IN found under by Econosto Nederland B V. The National Stock Number assigned to this part is 4820170487572, 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 489-1-2IN.