Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8509612-1 found under Filter Band Pass by L3 Communications Corp. The National Stock Number assigned to this part is 5915002431724, 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 8509612-1.