Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B83-1004-600-4 found under Filter Radio Frequency Interfere by T T E Incorporated. The National Stock Number assigned to this part is 5915013113877, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B83-1004-600-4.