Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MO427 found under by Mc Kie J H Mfr Inc. The National Stock Number assigned to this part is 4820012790224, 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 MO427.