Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MX-09-F found under Filter Low Pass by Espey Mfg And Electronics Corp. The National Stock Number assigned to this part is 5915008536400, 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 MX-09-F.