Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RV2-MF-4N-A-S316 found under Valvesafety Relief by Hy Lok Usa Inc. The National Stock Number assigned to this part is 4820016923696, 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 RV2-MF-4N-A-S316.