Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SR6011572X12-04 found under Seat Valve by Oic Valve Corp. The National Stock Number assigned to this part is 4820012899600, 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 SR6011572X12-04.