Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D2L40F found under Filter Radio Frequency Interfere by Filtek. The National Stock Number assigned to this part is 5915015366681, 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 D2L40F.