Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5252120 found under Valve Flow Control by E D Etnyre And Co. The National Stock Number assigned to this part is 4820015908060, 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 5252120.