Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MV820S found under Stemneedle Valve by Engineered Arresting Systems. The National Stock Number assigned to this part is 4820016816397, 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 MV820S.