Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 601-00-2665 found under Valve Holding by Chance A B Co. The National Stock Number assigned to this part is 4820011479997, 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 601-00-2665.