Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6696579 found under Sleeve Valve by U D T Inc. The National Stock Number assigned to this part is 4820014244188, 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 6696579.