Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP248MAB found under Valve Safety Relief by Erie Engineered Products Inc. The National Stock Number assigned to this part is 4820000044736, 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 SP248MAB.