Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3994AS664-01 found under Connector Fitting by Fleet Readiness Center Southwest. The National Stock Number assigned to this part is 1680016020729, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3994AS664-01.