Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 630AS129-1 found under Seat Valve by Stewart Precision Corp. The National Stock Number assigned to this part is 4820011472239, 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 630AS129-1.