Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 990313A found under Filter Radio Frequency Interfere by Phelon R E Co Inc. The National Stock Number assigned to this part is 5915009044939, 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 990313A.