Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 057 03012 00 found under Filterradio Frequency Interfere by Astrodyne Corporation. The National Stock Number assigned to this part is 5915016956805, 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 057 03012 00.