Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 45E02-1 found under Filter Radio Freque by Ontic Engineering And Mfg Inc. The National Stock Number assigned to this part is 5915003765695, 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 45E02-1.