Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ATT00001 found under Valve Flow Control by Automatic Timing And Control Co. The National Stock Number assigned to this part is 4820002351634, 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 ATT00001.