Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R2404S found under Valve Globe by Kerotest Manufacturing Corp. The National Stock Number assigned to this part is 4820001026531, 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 R2404S.