Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPE-12-SC311 SP-82163 found under Valve Ball by Pbminc. The National Stock Number assigned to this part is 4820012814375, 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 SPE-12-SC311 SP-82163.