Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EH6707 found under Cartridge Check Val by Assembly And Test Worldwide Inc. The National Stock Number assigned to this part is 4820011143944, 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 EH6707.