Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F3C10073 ITEM 1 found under Element Tube Valve by Vacco Industries. The National Stock Number assigned to this part is 4820011081926, 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 F3C10073 ITEM 1.