Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FTS4060-010-018-075-099 found under Frequency Standard by Symmetricom Inc. The National Stock Number assigned to this part is 6625014678576, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FTS4060-010-018-075-099.